This guide has UNRESTRICTED and UNTAGGED spoilers for the entire game!!! If you are still trying to complete a blind run and do not want to be spoiled, please do not read any further!























Completion percentage in BTTH is simple. Visiting a named location for the first time (aka seeing the name popup on screen), activating a checkpoint, or picking up various items adds 1 point to your completion total.

The maximum amount of points is 149, and each point adds approximately 0.725 %, for a maximum percentage of 108%.

In total there are:

• 27 locations
  
• 72 checkpoints
  
• 20 fizzies
  
• 12 postcards
  
• 7 phants
  
• 5 bats
  
• 5 miscellaneous items
  
• 1 story event

These will be detailed in the following sections.

NOTE: This guide is intended to show you where to find anything you might be missing for a fully completed save, but it is not a walkthrough, so most things will not show entire puzzles or puzzle solutions. It also doesn't cover achievements or other minor secrets that do not give % points for the save file.

The following 15 locations are along the main route of the game and are basically unmissable as long as you do not sequence break:

• Mola Town
  
• Belwheat Valley
  
• GC Warehouse
  
• Entrance Ruins
  
• Goldcherry Factory
  
• Cliff Face
  
• Forest Cavern
  
• Eroded Beach
  
• Port Naga
  
• Basin 21
  
• Pastel Strata
  
• Astral Tower
  
• Precipice Bridge
  
• Terminus
  
• Heaven's Channel

Climb up the western cliff above Mola Town. The puzzle room is very long and difficult, but at the top you'll find the remains of Jalta Lake.

Go to the creacher near the start of the game in Belwheat Valley. Every time you crouch, the creacher will imitate you. Doing this repeatedly will cause the creacher to slowly get more flattened and elongated with every crouch. Once the creacher is very, very flattened, swing downward and the creacher will hop extremely high into the air based on the number of crouches it did. If it was flattened enough, it will get stuck on the invisible bridge to the left of checkpoint 4 in Pastel Strata. Talk to it there to get uppie striked into the hidden Creacher Cave.

Near checkpoint 9 at the end of Precipice Bridge is a small building with a hard to see door. The door has no interact prompt, but you can still interact with it to go inside and find a research lab as well as a hidden train station. Alternatively, after progressing far enough into the game (I'm unsure at what point exactly this unlocks), you can use one of the other train stations to travel to "Trial Terminal" without having entered the lab from above ground.

Located underneath the eastern half of Precipice Bridge. It's quite easy to access using the path from Bridge checkpoint 9 that leads to the second fizzy and falling down after you break through the green destructible barrier. You can also climb up from the outlet at the top left corner of Basin 21, after completing the fizzy puzzle at checkpoint 7, and slide through a hidden passage.

On the right side wall of Abandoned District, hit the jelly block in the floor to bounce up to a tiny platform higher on the wall, then slide through the wall into a hidden room. After completing the puzzle here, you'll find the entrance to the home of the very important hamsters.

At the very beginning of Precipice Bridge, fall down through the right-most edge of the small spot where the floor is a bit broken. If you are aligned correctly and don't hit anything on the way down, you'll fall all the way into the large pit between Belwheat Valley and GC Warehouse. Charge the bat near the end of your fall and strike the ground as you land (not the fence that's slightly higher!) to break a very strong destructible block. Next time you fall down there, you'll fall through the floor and into the Drain.

Go to the room on the right side of the Drain entrance and step on the pressure plate near the telescope. If you've activated at least 60 checkpoints, the large door will open and give you access to the rest of the Drain area. After completing the entire zone, you'll find False Field just beyond checkpoint 10.

After making it past the dog, continue westward beyond the False Field and you'll get this at the final checkpoint.

Fall from the same location on Precipice Bridge that you used to open up the Drain entrance, but bounce off the fence near the Warehouse entrance instead of falling all the way down. Use any method of gaining height on your way back up and you'll find the Satellite high in the sky above the bridge.

After obtaining the Master Key, return to Mola Town and enter the small building on the east side of town that has the Esc key symbol on it. Stand on the small pedestal inside for around 30 seconds and you'll be automatically teleported to Sand Hell. Good luck getting out :)

The Warp Room. Enter from anywhere by holding the up button (W key or Dpad Up) while hitting any non-lethal solid surface in Ball form while your speed is 50 or higher.

Subsection of the Warp Room specifically for Villith's Drain. Use the normal method of entering the Warp Room while your active checkpoint is set to any checkpoint inside the Drain beyond the large door (i.e., checkpoint 2 to 10)

This category is very straightfoward, so I will not provide detailed guidance. Every checkpoint in the game is either along the main path or part of a hidden side path that leads to a fizzy.

If you're missing any, just check the fizzies section and you're likely to pick up the missing checkpoints while rounding up fizzies.

Also, the only checkpoints that are not tallied on the postcards are the two for Terminus and Heaven's Channel.

You can look for unactivated warp points inside the warp zone for a rough idea of where to find anything you're missing.

Note that the way checkpoints are numbered inside the warp zone is how they will be referenced throughout the rest of this guide.

1. Fall down directly below checkpoint 0 at the beginning of the "pro climb" toward Jalta Dregs, and the fizzy is in plain sight above the roof of your home.

2. After completing the first leg of the climb upward, another fizzy is inside this little alcove. Unmissable unless you skip this portion of the puzzle.

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Enter a hidden wall in the small pit shortly before you reach the creacher.

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From checkpoint 5, fall and bounce on the lower floor to get inside a hidden room to the right of the checkpoint.

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1. In a small alcove above checkpoint 2. You can reach it by bouncing off the right wall in the next room.


2. Directly above the previous fizzy, high in the air, is a side path that leads to the second fizzy. It's easier to reach starting from checkpoint 3.

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1. At checkpoint 4, use the momentum block tucked inside the right side wall and take the upper path to find the fizzy.


2. On the small island to the left of Master, near checkpoint 6. Build up speed using the fences in the room above master's house and bounce over to it in ball mode, or just walk off the cliff and time a bounce off of something in the ruins below, using upswings to gain height afterward.

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From checkpoint 4, bounce over to the jelly block on the right, then take the upper path across the fences back to the upper right side of the area to find a hidden room in the cliffside.

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Gain extra speed from the room at checkpoint 5 and fly through the fence in the right wall just before the exit to Port Naga. You'll need to maintain speed and bounce on a couple more platforms without falling down to reach the fizzy in a small alcove to the east.

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1. On a small platform above the Observer's room. The intended path is to jump off of the last platform before the Basin entrance, and bounce off a spot below marked with a checkerboard background, but this is very precise and difficult to land. It could be easier to come back later with the roller blades and spin jump up to it.


2. On another small platform suspended in the air to the left of the Observer's room. Falling off the tower and using a well timed bounce far below might get you to it, or you can wait until you reach the Pastel Strata entrance and fall straight down onto it from the spot where this sign is.


3 and 4. In the bottom right corner of the area is a destructible wall that leads into the arcade. Complete the challenges given by both characters inside the arcade and each one will give you a fizzy.

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1. Near checkpoint 6 is a small fence inside the left wall that leads to a fizzy. The easiest way to move through this small puzzle is to start at checkpoint 5 and get as much speed as possible, then continue bouncing off the floor after crossing over the long stretch of purple blocks.


2. Directly above where the previous fizzy was, take the jelly block upward to an extra checkpoint and a long puzzle with another fizzy at the end.

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Near checkpoint 4, fall through a platform just outside the right entrance to the phant room.

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1. Grab a charge from the block to the right of checkpoint 4, then backtrack to the previous room and bounce on one of the sloped corners to get up inside the ceiling. Find a way to break the purple barrier down and there will be another puzzle inside that leads to the fizzy.


2. Slide thru a false wall on the end of the bridge by checkpoint 9, then whack the posts repeatedly to skate very fast across the ice inside the bridge. Enter ball at the other end to bounce back and fly towards an obstacle course on the underside of the bridge that will give you a chance to break the red barrier underneath the checkpoint, where the fizzy is just inside.

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During the checkpoint 6 puzzle, bounce back to the right and take a lower path under the checkpoint to reach a fizzy at the end of the loop.

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• Note that there are only 12 postcards
  
• Mola Town's postcard includes the Jalta Dregs checkpoint
  
• Pastel Strata's postcard includes the Astral Tower checkpoint
  
• Villith's Drain's postcard includes the Plateau Underside checkpoint
  
• Terminus/Heaven's Channel do not have a postcard despite having two checkpoints within
  
• Other minor areas have no postcard and no checkpoints or fizzies

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After picking up the bat, climb back up to the left and find a hidden passage inside the cliff, just under the town.

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Hidden spot near checkpoint 1

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Hidden spot directly under checkpoint 4

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Hidden spot directly under checkpoint 1

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Hidden spot in the upper right corner above checkpoint 3

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Right of checkpoint 2, or directly under checkpoint 5. Hit the momentum block very hard to fly inside the left corner of the ceiling in the small cave

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Take the upper path from checkpoint 1 to find it in a hidden spot directly above checkpoint 2

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Hidden spot to the right of checkpoint 2

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Hidden spot in the upper right corner after checkpoint 3. Might be easier to reach backtracking from checkpoint 4

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Hidden room directly underneath checkpoint 7. Use the vector block on the underside of the far right edge of the platform to reach it

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Go through the ceiling left of checkpoint 4, in the same place that leads to the fizzy, but ignore the purple barrier and instead jump up again on the left side to find it sitting atop a post

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In plain sight after completing the first puzzle at checkpoint 2

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After obtaining the Master Key, go to GC Factory checkpoint 6 and enter the large house near Master. At the end of this room is a barely visible door, with no interact prompt, but you can press interact anyway to go outside into a room just below the Forest. Climb up to the upper left corner to find a small hidden tunnel with a phant at the end.

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There's a hidden room positioned directly under the fizzy, but you have to enter it from below. You can start from checkpoint 6 and fall down just before the fizzy to bounce off the red blocks at ground level, or start from checkpoint 3 and use Angel Bat and/or Roller Blades to boost up to it from a fence below. Follow the short puzzle to the far right side of the area to find the phant tucked in the upper corner.

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1. During the checkpoint 6 puzzle, stop just before the final ramp and fall through the ice platform where there is a small gap in the purple blocks. A sand puzzle inside guards the phant


2. During the checkpoint 7 puzzle, fall to the bottom platform in the section of long stacked platforms to once again find a small gap in the purple blocks that leads to a second phant puzzle room.

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Hidden in a difficult to reach room to the left of checkpoint 1. I'm not actually sure what the intended way to reach this is, but if you have the Roller Blades you can start at the single jelly block above the checkpoint and let it send you leftward, then swing down onto the jelly pillar as you cross and ball bounce off the metal slope into the tiny alcove where the phant is.

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1. Directly above the checkpoint, high in the sky, is a huge black box which is actually the physical location of the ??? Warp Zone. There's a small path of platforms only accessible from the underside that will lead around the bottom left corner to a little nook with a phant in it. You can try to get on top of it by getting a ton of extra height at the end of the climbing puzzle and then drop off the edge to bounce off the ground to the underside, or just use Angel Bat + Roller Blades spin boosts to slowly bounce your way up there.


2. If you climb very, very, very high up the cliff on the left side of the lake, you'll eventually find a small tunnel leading through the cliff and out the other side. Fall straight down the left side of the cliff to find a phant at the end of the platform. Any method of gaining height will be quite difficult to get all the way up, as it takes very many bounces and the timing window for hitting the ground becomes extremely small.

However, there is an alternate path if you manage to break open the container on the top level inside Satellite Ranch. Even doing this is quite difficult as it takes a very precise ball bounce into the left side column at high speed and then a fully charged swing onto the container, but if you get it open there is a float block and a super jelly that shoot you off a sloped ceiling in the direction of the western cliff. With the perfect amount of speed and a well timed hit to the jelly panel that's halfway through the sky, you'll land directly on top of the cliff, and then you can just drop down the left edge. But even a slightly messed up trajectory might still land you on the platform where the tunnel cave is.

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Standard bat with no special function. At the start of Belwheat Valley. Kinda hard to miss.

Gives you slightly lower gravity when bouncing off things with it. Complete the Terminus trial in under 60 seconds, and the door to the left of the Heaven's Channel checkpoint will open, leading to the bat.


Reaches full charge extremely quickly. Received by talking to Joe in Port Naga after you've obtained all 20 fizzies.

Very large and can overcharge for lots of extra impact power, but swings much more slowly than other bats. Appears on the pedestal in the phant room at Pastel Strata checkpoint 4 once you've obtained at least 5 phants.


Slows down time a bit for a couple seconds after hitting something, but otherwise functions just like the normal bat. Appears in the Power Room within Abandoned District after disturbing all five hamsters and then reloading the game. To find the fifth hamster, hop through the fake wall on the left side of the hamster room, then drop through another platform to a short puzzle that will let you bounce up to a hidden room in the ceiling near the entrance of the Power Room area.



DOES NOT COUNT TOWARDS COMPLETION TOTAL. It doesn't matter for your % whether or not you pick this up.
Works the same as the normal bat, but every swing has a very low chance of "misfiring" and giving you an absurd amount of momentum. Can be found at the start of the game by using ball form to bounce past the normal bat without picking it up and then getting softlocked somewhere.
If you pick up the normal bat first, it can still be found in a secret room within Villith's Drain near checkpoint 6. Hit the float block in a way that you fly upward into the tunnel that led into the room, then swing down inside the ceiling to hit a superjelly that will fling you through the next ceiling in the above room.

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Simply picking up the logbook in Mola Town at the beginning of the game counts towards completion.

In GC Warehouse checkpoint 4, use the hidden path in the right wall that leads to the fizzy, but instead drop down and make a precise landing on a small platform in the bottom right corner of the lava tube. You'll find the ticket under the large portrait of Villith.


Although the postcard identifies this as a secret within the Forest, you'll actually access it from the end of GC Warehouse, starting at checkpoint 6. Backtrack to the previous room and fall down, then bounce on the red blocks to get to the right side of the brick wall. If you can hit the momentum block on the way up, it helps a lot. If you don't get high enough you'll land on a seemingly pointless location with a sign identifying it as a break room, but climb higher up the right side wall to find a hidden passage that contains the key and then exits into the forest.


Go to Basin checkpoint 7 and complete the puzzle that leads to the fizzy. Around halfway down the ice path that leads back to the checkpoint, stop at the column that has two vertically aligned squares on it, and drop through the floor to find a jelly block that sends you through the ceiling where the "Blade" is waiting.


Talk to Butter at Jalta Dregs and one of the dialogue options will result in her giving you a contact card that gets added to your logbook.

Not an item, but still counts for completion. When you reach the False Field at the end of Villith's Drain, go inside the cabin and climb up to the attic. Exhaust Villith's dialogue then walk over to the Plateau Underside checkpoint until you here a strange noise, indicating that Villith has decided to leave, then the event is considered completed. This is the only story event that gives a point for completion percentage.