0-4 // A ONE-MACHINE ARMY (Any%)
0-4 // A ONE-MACHINE ARMY (Any%)
First Arena
Trigger Skip // DIFFICULTY: 2/10 // FASTEST
Start off by placing oil in the middle using the Firestart Rocket Launcher. Then, do a Slam Store (or two) and slide until you reach the first door.
Once you're at the first door, do a Slide Jump then slam right before this point seen in the screenshot below.

After landing, do a Trigger Skip however way you may like. Once you Trigger Skip, do either a Flick UB or a CE Boost to get up to the checkpoint.
Jumpstart Clear // DIFFICULTY: 3/10
Start off by placing oil in the middle using the Firestart Rocket Launcher. Then, equip the overpump and start pumping it until it's at max. Once it's at max, do a Slam Store (or two) and slide until you reach the first door.
At the first door, use your overpump to fly over to the arena trigger as soon as possible. As you're in the air, throw out 3 (ideally) of your magnets so the jumpstart reaches all 15 of the enemies in the room.
After placing down your magnets, switch to your jumpstart then target one of the Strays at the highest platform by whiplashing them then both placing the jumpstart cable & shooting the primary fire of the jumpstart at the Stray.
Once the stray dies, the rest of the enemies in the room (15) should die as well. In the meantime, equip your Alternate Sawed-On and start charging it up with both primary and alternate fire, as you want to then Dash Jump (while on the stairs) to head towards the Maurice.

Once at the Maurice, release both your primary & alternate fire to hit the Maurice, which should instantly kill it. After killing the Maurice, do either a Flick UB or a CE Boost to get up to the checkpoint.
Nuke Clear // DIFFICULTY: 4/10
Start off by placing oil in the middle using the Firestart Rocket Launcher. Then, equip the overpump and start pumping it until it's at max. Once it's at max, do a Slam Store (or two) and slide until you reach the first door.
At the first door, use your overpump to fly over to the arena trigger as soon as possible. Once landed, throw a saw with Attractor Sawblade then throw an oversaw with the Overheat Sawblade at the Stray on the lowest platform.
After throwing out the oversaw, go on the stairs then switch to your Core Eject Shotgun. Once swapped, start charging it up and after everything has spawned, release right click then quickly switch to your Malicious Railcannon to shoot the core, which will do a Nuke.
Once all of the enemies are dead (15), switch to your Alternate Sawed-On and start charging it up with both primary and alternate fire, as you want to then Dash Jump (while on the stairs) to head towards the Maurice.

Once at the Maurice, release both your primary & alternate fire to hit the Maurice, which should instantly kill it. After killing the Maurice, do a CE Boost to get up to the checkpoint.
Splitcoin Clear // DIFFICULTY: 5/10 // FASTEST (if you don't like T-Skip)
Start off by placing oil in the middle using the Firestart Rocket Launcher. Then, equip the overpump and start pumping it until it's at max. Once it's at max, do a Slam Store (or two) and slide until you reach the first door.
At the first door, use your overpump to fly over to the arena trigger as soon as possible. Once landed, throw a saw with Attractor Sawblade then throw an oversaw with the Overheat Sawblade at the Stray on the lowest platform.
Once placed, quickly jump up and throw a coin towards the highest platform, then do a Split Coin once the top two Strays spawn in. Do the same for the two Strays that spawn in on the second highest platform.
After killing both of the Strays, Knuckleblast the 10+ Filth at the bottom, then after they've died, equip your Alternate Sawed-On and start charging it up with both primary and alternate fire, as you want to then Dash Jump (while on the stairs) to head towards the Maurice.

Once at the Maurice, release both your primary & alternate fire to hit the Maurice, which should instantly kill it. After killing the Maurice, do either a Flick UB or a CE Boost to get up to the checkpoint.
Tunnel
CE Boost // DIFFICULTY: 2/10
After checkpoint, do a dash then slide a bit, then do a CE Boost till you're at the end of the tunnel. Once you're at the end of the tunnel, slam then dash to go into the checkpoint. From here, pause and checkpoint to regain your railcannon charge.
DSJ Nuke // DIFFICULTY: 3/10
After checkpointing, do a DSJ and then wait a little bit. Once you've made it a bit past the door, do an Ultraboost (ideally, a Flick UB) to make it to the end of the Tunnel.
Once at the end of the tunnel, slam then slide into the checkpoint. Then, pause and checkpoint to regain your railcannon charge.
UB Slide // DIFFICULTY: 4/10 // FASTEST
Once you did your Ultraboost, quickly swap to your Firestarter Rocket Launcher & Knuckleblaster Arm, then PAUSE as SOON you hit the checkpoint. After pausing, click "Checkpoint" then instantly hold slide and start throwing out oil below you.
Keep sliding UNTIL you're near the area as seen in the screenshot below, at this area you want to Knuckleblast somewhere around there depending on the speed you're going at.

Once you've used your Knuckleblast, the front glass at the Final Arena should be broken. Keep sliding until you're above this broken part of the glass, then slam down. Once you've teleported back up, continue sliding (by pressing Slide again) until you're at the exit.
Final Arena
Malrail // DIFFICULTY: 2/10
After checkpointing, break the cooling chamber glass in front of you with either your Whiplash or one of your arms. Then, go into the final arena and use your Malicious Railcannon below you.
This will give you a significant amount of height. Once you're above the line shown in the screenshot below, either dash over or Rocket Ride till above the stairs that lead to the exit. Once above this, slam down and slide into the exit.

Trigger Skip // DIFFICULTY: 3/10
After checkpointing, break the cooling chamber glass in front of you with either your Whiplash or one of your arms. Then, go into the final arena and line up right before the line in the screenshot below.

Once you've lined up, do a Trigger Skip in any way you prefer, then with the momentum from the rocket, let it send you close to the door. Once you're near it, slam down, then either do a DSJ or a dash slide into the exit.
Fan Teleport // DIFFICULTY: 3/10 // FASTEST
After checkpointing, break the cooling chamber glass in front of you with either your Whiplash or one of your arms. Then, go into the final arena and break the first glass right below you.
Once broken, slam down. After you've teleported back up, continue sliding (by pressing Slide again) until you're at the exit.
Video Guides
ULTRAKILL || 0-4 Beginner Speedrun Guide (Any%) by @Ghastly_gengar