(I recommend Scrapper for this section if you are comfortable with the grapple tower)

The first, and most involved, weapon unlock starts in the City biome. All the missions in a biome use the same layout/map, so any of them will be fine.

To start, look for the endpoint of the Barrel escort mission, the raised yellow platform with the red energy gate. This is easiest from the central ring structure. Once you locate that, you'll want to go into the large boxy building that's towards the outside of the map next to it - /u/Medical_Winner_1307 has some great screenshots here; I'll grab some of my own later.

From there, go down the hallway and hit the button to load into the secret sub-level. From here on, you *cannot fail* and have infinite respawns, so don't worry. There's some checkpointing as well.

Once in the parkour sublevel, you more or less proceed to the end. In the first area, you generally need to proceed far, far down and to the right to a hole in the wall, then generally continue heading in that direction & to the right until you end up in an identically large chasm room - now you need to generally follow the pipes up and to the left, while dealing with some enemies.

Once you get through the last crack in the wall, you'll find yourself in a pillar room that spawns two laser bosses to beat up. Once you beat them*, you can open the door at the back of the room, and grab the front-and-center weapon frame off the ground. This will also give you the server room access codes for the space rig, and the drop pod will be summoned.

Now that you have the broken frame & access codes, you can start finding & getting the four weapon modules for the broken frame. One of them is on the space rig itself, and the other 3 are in the other 3 biomes.

Each module will cost 2 saxonite (and potentially other resources) to unlock after obtaining them. You'll need a total of 8 saxonite to craft this weapon. For those that want to know what they're paying for, it's a chainsaw for close melee cleaving trash clear without any mods, DOOM style :3. I recommend not beelining this, and getting some other better weapons to pair with it first!

The list of server module names & locations are as follows (thanks BattleMedicMain!)

• Server room: WEAPON MODULE 1A7B
  
• Desert: WEAPON MODULE 89J2
  
• Tundra: WEAPON MODULE 88B4
  
• Gravity Farm: WEAPON MODULE 2A30

at the top of the ship, above where you load in initially, is the server room. You should be able to now open the room up; there is a blue weapon module at the far end of the room that you can melee to obtain the first module.

The remaining mods are located in the Desert, Tundra, and Farms. In no particular order:

There is a very unambiguous spaceship wreck sticking out of the ground near the outskirts of the map. Summon your whip and drive around a bit til you find it.

If you're on the ground and looking up at the ship, the module is in the lip lower-left thruster nozzle. If you've climbed on top of the ship and are trying to fall down onto the thrusters, it's the lower-right thruster nozzle. Scrappers can probably yeet themselves up from the ground using 1 or 2 grapple towers.

The Tundra module also on the relative outskirts of the map - this time, look for a large building with two sewer pipes jutting out from it, up on one of the hills in the outskirts. There should be a power-zipline going up to the left side of this building.

The weapon module is on the shelf/ledge underneath the two sewer pipes. The 'intended' way to get up to this is to walk around to the side of the building, get onto the rings going around the building, and then walk back to the front & jump around a corner to get to the shelf. Again, scrapper can just kinda throw down a grapple tower to yeet themselves up to the ledge.

This weapon module is in a *far* corner of the map, on the opposite end from the spacehip-grabbed-by-a-tentacle that's in the skybox/out of the playable field. It's in the farrrr back corner, behind a scrap sheet metal wall. Here are a couple pics (1)[hecate.pink] (2)[hecate.pink] showing this off a bit.

At this point, you should have all four modules! Once you pay 8 saxonite and change to unlock all of them, you need to assemble them in a diamond pattern to tie it all together. If you want the craft solution, you should be able to see it here[hecate.pink]. Have fun!

If you've wandered around the central ring of the Gravity Farms, you maybe noticed a weird little garage building with a red, blue, and yellow light on it. There's three switches hidden around the map behind breakable walls. Let's dig in.

The red switch is inside of a silo that's at the back of the LARGE purple mushroom clusters.[hecate.pink]

The blue switch is inside of a greenish building that's sorta near where the weapon module was (for the other weapon).

pics:

• (1)[hecate.pink]
  
• (2)[hecate.pink]

The last one is on the side of the goopy purple-yellow tower not too far from the lights-garage itself. It's the PINGED building in this picture[hecate.pink], and NOT the building under the crosshair - weird angle to show where the tower is from the lights garage.

Inside the garage is what looks like a landmine (it's not). If you interact with it and then finish the mission, you will have a Scorched Transponder in your storage tab (not a gear pickup!); you can interact with it to consume it, which adds a new mission to your mission selector in the drop pod!

The mission itself has a floor of difficulty 4. You just need to survive until the bar is at 100%, then you can blast open the side of the spaceship. Once inside you'll want to break another wall open on your left; there's a switch to interact with that will give you a new [craftable :(] weapon - the acid grenade launcher!

In the moldy tundra, look around to the right-hand side of the Silo that the Weapon Module was on. There's a pitfall under a cagey looking mushroom that takes you to a secret sublevel that is incredibly straightforward :)

You can find the following in a mission with the [redacted] modifier. If you use the gunship cannon to destroy it, you'll get an exotic upgrade for the gunship cannon.


once you get the exotic, you can get another 3 upgrades for the gunship cannon that scale based on how many of the others 'lenses' (?) they're adjacent to.

In the desert, you can find a hatch in the outskirts of the level, if you head in the direction of the large four-pronged tower to the right of the windmills when looking from the center of the map. The hatch is up near the edge of a steep ridge.

If you step on the hatch, a considerable number of enemies will immediately spawn. Be careful!

There's a red button that says "Red Keycard required", however, one of the devs confirmed in their discord that the red keycard is not currently in the game, so there's nothing else to do here for now.

There's a handful of other secrets I've found so far. In no particular order:

• there is presently one blue DMLR mod that can only be (initially) obtained by running along the top of the monorails in the city.
  
• in roachard's room, there's a pathway out along a glass exterior walkway that wraps around to the Nav room. If you jump into the vent by the nav room door (or open the hatch in the walkway to the nav room and drop down), you can explore around and find an interactable console that toggles Player HIghlights at the end of each mission
  
• if you jump up into the pipe next to roachard's room, there's a free module stashed up in there.
  
• there's brown boxes that you can find that will give a random mod & skin when broken. Undeadpixels has a guide covering the ones you can find on the ship! You can also find them in levels; I have only found some on Gravity Farms so far.
  
• you can hold X to get another emote/gesture wheel, which is how you can Say Hi To Roachard
  
• you can get unlocks from discovering Hidden Paths in the upgrade mod arranging system - if you have mods in certain 'paths' of the cells, you'll be given a mod!