Here is the full list of all 67 Turbo Overkill achievements.
Finish every level on Street Cleaner or higher
Finish every level on Serve Me Pain or higher
Find all Tech-Chips and Cassette Tapes
Complete Terminal Eclipse
Finish The Wastes on Serve Me Pain or higher without dying or reloading
Acquire all augments on a single save slot
Fire a rocket, grab it with the plasma gun, and kill 5 or more enemies with it
Kill all Dopefish in Open Season
Get eaten by a shark in Emergence
Kill Maw and his minions in the final arena of Night Ride with chainsaws only
Defeat Ripper in under 5 minutes without dying or reloading
Finish every level on Murder Machine
Defeat Maw on Napalm Blitz without taking a single hit or reloading
Complete Rooftops
Get 100% kills on every level
Complete Ascension
Finish Exodus without firing your hoverbikes minigun
Kill all enemies in the skate arena in Syn by only using your Chainsaw leg
Destroy the arcade cabinet in Scrapyard
Complete Syn
Finish Infestation without taking a hit while driving the car
Kill Artifact-Zero in less than a minute
Complete Vector-4 in under 12 minutes
Finish every level on Regular Joe or higher
Finish every level on Virgin Blood or higher
Get all weapons and upgrades on a single save slot
Get denied entry to the No Chainsaws club in Battle Alley
Kill a Rammer with their own Mace
Complete Battle Alley
Complete Dead Plaza
Complete Open Season
Complete Emergence
Complete Final Purge
Complete Episode 3
Finish Turbo Overkill
Complete Teratek Showdown
Defeat The Monstrosity
Complete Vector-4
Complete Sunset Synthetica
Destroy the haunted machine on Sunset Synthetica
Complete Night Ride
Complete Infestation
Complete Scrapyard
Complete Refactor
Complete Napalm Blitz
Complete Episode 2
Defeat the Bounty Hunters
Kill 15 or more enemies with 1 Ion Blaster beam
Complete Pressure Point
Kill up to 25 enemies while in Turbo-Time
Have over 100,000 Zhen in your current account
Complete The Wastes
Complete Exodus
Stay off the ground for 30 seconds or more
Get beyond wave 40 on Endless on default settings
Get beyond wave 20 on Endless on default settings
Complete Outskirts
Get eaten by Jimmy the worm in Outskirts
Complete Teratek Factory
Get taunted by Maw at the secret splice terminal in Terminal Eclipse
Complete Toxin Refinery
Kill Jazz with toxic slime
Kill up to 8 enemies with 1 Waster explosive shot
Complete Paradise Lost
Complete Episode 1
Complete Artifact-Zero
Kill 10 or more enemies with 1 Launcher rocket