If you have any challenges that you would like me to put in, leave them in the comments.
I'm planning on adding videos for the challenges for you to get an idea of how to play it.

Pretty much anyone who knows what the word pacifist means knows how this works, but if you don't, it's where you don't kill any enemies while you progress through the game.

WARNING: You cannot play this challenge if you haven't beaten the game on hard.

The challenge is to play through the game while only using the Katana and the Chainsaw.

WARNING: To play this challenge you have to have beaten the game on V. Hard difficulty.

The challenge is that, by using Rival, not touching the ground during the game.
EXCEPTIONS: When you enter a new area or exit an area. Boss Fights. Level 2 Elevator area. Level 6 Apple Area.

The Challenge is that you can only use the Rocket Launcher and the Sticky Bomb Launcher. No homing missiles.

The challenge is that you can't use ANY BULLET TIME.

Beat the final boss while copying the weapon that he holds. (when he is holding a katana, you have to be too.) Creator: ibowser123

You have to beat the game on Hard to do this challenge. Beat the game using White Mk I

Defeat Bunny Rockette's level with only the revolver. Credit to Hokey Pokey