Here is the full list of all 23 Mayhem Triple achievements.
Kill 5,359.4 enemies.
Finish the game without health upgrades.
Unlock every tontine treasure.
Get Georgia Close's number. You creep.
Discover the secret to defeating the bunny threat and save the world.
Save every hostage in the game.
Permanently kill the birthed alpha bunny.
Buy every available health upgrade and weapon holster.
Find the hidden magnums in the "House of Cards" chapter.
Find the hidden greasegun in the "Prologue" chapter.
Stake 30 bunnies to a wall.
Kill 10 enemies with a single sawblade.
Cause 20 enemies to be destroyed by testicle bombs.
Taze a crotch rocket.
Just beat it!
Find a better way to kill a mech.
Score a perfect 10 in death.
Destroy the helicopter in a special way.
Find the hidden Face-Trapper in the "Adobe Acrobat" chapter.
Save a hostage.
Decapitate The Dire Bunny.
Kill a bunny in midair while diving and holding 2 weapons.
Walk Outside!