Disclaimer!: This guide is directed to people who are beginners and/or people or are struggling and do not understand a level.

"The Classic". All you gotta do here is beat Classic Mode. You'll hear these strange footsteps that kinda sound like a broken tape recorder and that's when the monster (named Legs, yes, really) is near you. You want to look at him and he'll run away. However if he doesn't run and it says "RUN" on your screen, you should take that advice (don't worry, he's slow). Once you get them all, there'll be a quick in-between segment which will introduce you to the monster in the last level. Also Legs doesn't like it when you run, so it'll trigger him faster. Just walk it off. Note! Later on in the level when you have a few orbs left to collect. He'll start making the sound of the orbs and instead of red lights from his eyes. They'll be blue to trick you. Also because of this, you can now see him on the radar. He'll look the same as the other orbs, apart from he'll show more of his surroundings and move.

"Shutter Mode". This is where some people may struggle, as the difficulty ramps up a bit. It's still the same monster, he just acts differently. You won't have your flashlight, this time just a camera. You can't see much so you'll need to rely on sound. Same deal, if you hear Legs on his way to you, flash him with the camera! Cool, he runs off, then you continue. The chase will be harder this time. He's faster than you. So while running, you need good reaction time to turn around and stun him with the camera. After stopping that steam train of an enemy, you'll go back to finding orbs. Oh yeah! I forgot to say this before. Sometimes the monster will get a bit angry with you and outright kill you with no defense for yourself. So try not to take too long. This also applies to the other levels where 2-3 chases, you're out for good.

"Hide-N-Seek." Oh yea, this is my favorite level. It's hide and seek, but you're it! This monster will be different from Legs. He'll take the form of a pile of light gray pixels. Don't look at him or run into him though. All though it's Hide-N-Seek. You don't want to find this fool. Otherwise he'll go into phase two where he stalks you around the level. Once this happens, run as far as you can, and crouch, turn off your flashlight. Hiding behind boxes littered around is the best play. He'll sound closer than he actually is, use the radar to see him moving. Try to stay mobile as if you stay in the same hiding spot for too long like a coward, he'll get to you. Sometimes even teleporting, yes, I've seen this. He will eventually find you. That's when it's phase 3, chase mode. He'll get caught on obstacles and break down walls to get to you. It's not recommended to try and juke him out and wait for him to go around a corner to you since he'll break down the walls around him. Just run as far as possible as fast as possible until it's over. Then phase one again, and you're it. Note! If you evade him long enough by hiding, he'll speed up and become more angry.

It's worth mentioning there IS a secret enemy which is very rare that can spawn in this level.
The game sometimes says there is a secret spider. I dunno the chance of it spawning, but it'll make your life much more difficult this level.

"Living Halls." This level is terrifying in my opinion. It gets hard here. You'll start in one of 3 vaults. It may give you very vague hints lying around. Basically, by holding 'space' you see this timer on your arm. Once you leave the vault, you got 2 minutes to get as many orbs as you can, then once it's around 25 seconds, you want to use your radar to find a vault to take shelter in. The monsters (plural) will look exactly like the walls. You're gonna hear beeps when you're close to them, like a metal detector. You want to look at where you think they are. Then continue walking past. They may chase you, best thing to do there is to run. It'll become clear when it's chasing you that it's NOT a wall. It's quite a big map, so good luck. Get the orbs, then you win like always, well, kinda. The endings to each level are.. questionable..

"The Phantom". This is by far the MOST challenging level. It may confuse you at first. You both are invisible to one until a chase is initiated. It'll try to use sound to find you, and you need to also use sound to detect where it is. SOUND IS KEY as you'll be forced to use what it uses against it. Hold space to hold your breath. This will be your best friend if you find it in the same room as you. The Phantom will throw furniture everywhere around it. Making lots of noise. If you see everything in the room next to you are in your room flying around. That means it's right there with you. You MUST stop moving and hold your breath. It may walk right through you without you noticing. So it doesn't matter if you're in a corner or not. Wait for it to pass by until you think it's safe, it may take a while and you may have to stop holding your breath momentarily. You cannot die from holding your breath just like in real life. If you left click with your mouse, it'll place this funny looking device that will make a green sphere which will act as a safe zone. However you can only place one at a time and only have two of them. If the Phantom is chasing you, both of you are visible to one another. There are 2 ways this can end. 1: You die. 2: You reach a device. A device will shock the Phantom out of a chase according to the game. But it doesn't matter if it's chasing you or not, if it walks into the device on it's own (which is rare). It'll use it, once you run out of devices, that's it. You better collect the rest in time. It's interesting to note that my game.. Glitched? I think? Because it ran into a device on it's own, and I didn't see or hear it once at all after that and beat it. However I wouldn't rely on glitches to save you. Once you beat it, you will die at the ending sequence no matter what and lose/win. You beat the game after that, congrats! Now for the harder achievements..

Ohooh~
Here's where the difficulty REALLY begins.
See the little stars you got in the main menu in the bottom left for beating the levels? The first three take you to a more insane version of the corresponding level.

Sooo, this game's lore is pretty much unknown. You can piece some things together but there's no real story or motives being told. A cool note is sometimes you can see the "tip" when you start a level say "There is a secret spider". It's a rare chance, but you can see a spider enemy in "Hide-&-Seek".
Also one time i was playing "Stutter Mode" and it said quote, "you hear giggling down the halls" as my tip. And sure enough when I began, I heard giggling and got attacked almost instantly, strange.

Re-enter Shutter Mode again. You don't actually need to beat the level for this achievement, it's a little glitchy. Use all your batteries and collect an orb right after, it'll give you back some battery. If it doesn't work, I think you have to either die or complete the level first. The most reliable way to get this is to have 1 or 2 orbs left and then use all the batteries and collect them and win.

Okay I take it back, THIS was the hardest for me. Click the first star and be taken to a brutal version of "The Classic". The radar will provide the entire maze to you, showing everything. There are like, 40 orbs, I think. And Legs isn't messing around this time as he is FAST af. And I swear, Legs will do everything to get out of line of sight. So just look around real fast everywhere. You'll die lots and lots to this. Once he is chasing you, BOOM, instant night time. You're flashlight may glitch out and make it really hard to see. He'll sound like he's crying when chasing you. Move fast, but not really though as "running is dangerous". Second chase is harder as you're screen will move diagonally in a attempt to disorient you while running. Third chase, your flashlight is broken. I actually beat the third chase but lost to the fourth, yes, a FORTH. So in theory you can infinitely survive chases maybe. But it's highly unlikely that that's the case. Good luck, you'll need it.

This is called "Shudder Mode" rather than "Shutter Mode". But, it's daytime? So it's easier to see him right? No, not at all. He is the fastest thing in the game during this mode (to my knowledge). In fact, Legs will specifically try to go around and reach you another way as he'll try to take a path that reaches you without you seeing him. It'll avoid line of sight at all costs. So you may need to use trickery with which way you're looking. Legs is very unpredictable here and is insanely quick. I didn't have much trouble with this level honestly. It took a few attempts. So apparently the sun WILL set like it says at the start. But I never saw night time. It'll make it harder as it's darker of course. And I'll assume that after a long while he'll outright kill you, however don't take my word for it as I have never seen that.

Okay, well, in my opinion this is easier than the original. I beat it first try. This is nice as it's outside again. Making it MUCH easier to spot the monster in this level and avoid him. He works almost exactly the same as in normal Hide-N-Seek. More on that later. It's quite easy to see where he is at and when he's seeking you can see exactly where he is, remember that he sounds closer than he actually is. You can see where he's looking by his laser red eyesight. If you're far away from him and he sees a glimpse of you, he'll pause and go berserk. He'll charge around where he last saw you. Apart from that, this is the same, if not easier. He's a bit faster when chasing but still not that smart. You got this one. Also stay mobile all the time and always try to make sure you know where he's at.

If you just run by and collect every orb apart from the last one without finding the monster, he'll start seeking for like 15 seconds or something. Then hide again, he'll also say "BAD SEEKER" and "PLAY WITH ME". So yea he does get a little angry.

Yeah, so there is NO star levels for "Living Walls" and "The Phantom". But guess what? Time to go back to Classic Mode! Once you're in "Classic Mode" again, you absolutely CANNOT click "W" on your keyboard. You must beat it only moving backwards and sideways with "A", "S", and "D". A good tip is to always use you mouse to look around yourself periodically so that way you can see a orb you would've otherwise missed. And to also spot Legs of course. A pro tip is that after you collect the first orb without walking forwards, the game will notify you if you messed up.

YOU MUST ALSO ONLY MOVE BACKWARDS AND SIDEWAYS AFTER YOU BEAT IT DURING THE SMALL IN-BETWEEN SEGMENT. DO NOT WALK FORWARDS UNTIL YOU EITHER GET THE ACHIEVEMENT OR RETURN TO THE MAIN MENU

Did you like the Phantom and enjoy the mechanics of sound? Yeah well throw all that out the window. To get this achievement you must go to "Options" in the main menu and turn your in game volume setting to zero. Now that you have no audio, you're kinda screwed. The game gives you the tip of listening to a funny song. This is actually great advice as it helps you. I recommend any music from a video games soundtrack, or anything you like. Now listen carefully... Never EVER sprint unless it's after you. You see, you can't hear it or anything. But it can still hear you. So just walk, chances are you may not even realize it's even there until it jumps in your face. Just walk and look around yourself. If you do see a visual indicator that it's near. Just wait and hold you breath like always. There's not much advice I can give here as the only trick is to listen to good music while doing this and take multiple attempts. If you need to take a break, sure, go for it if that helps you. But it's just trial and error, keep going until you get lucky. It's a bit easier than you think, it's once you've accepted the facts is when you'll find yourself doing better.