Full list of all 85 Viscera Cleanup Detail achievements. It takes around 50-60 hours to unlock all of the achievements in the base game on Windows.
The base game contains 65 achievements, and there are 2 DLC packs containing 20 achievements.
Fry 500 items with the plasma welder
Pick up 800 casings
Pick up 1000 pieces of trash
Use the Sniffer for a total of 2 hours
Incinerate 50 Santa hats, the symbol of everything you hate
Suffer the wrath of the Bin machine 75 times
Receive a total of 100 helping hands from the Slosh-O-Matic
Completely clean the entire Shadow Warrior temple level
Collect the two million dollars of cold hard cash from the Shadow Warrior level all at once and bring it back to your office
Completely clean Santa's Workshop without breaking any Christmas items and clock off
Completely clean all mess and destroy every item in Santa's Workshop and clock off
Completely clean all mess in Santa's Workshop and clock off
Collect Santa's shotgun and bring it back to your office
Collect the iconic reindeer nose and bring it back to your office
Collect the different Rooks Keep figurines and take them back to your office
Collect the different Ballistic Weapons toys and bring them back to your office
Collect elf heads and bring them back to your office, you freakin' psycho!
Build a stack of 10 stools
Prove your incompetence by leaving a worse mess in Santa's Workshop and clock off
Bring about the sad meeting of Ice-Cold Banger and fire
Requisition a new replacement janitor through the use of TNT
Complete All major Official Levels
Complete Incubation Emergency Level
Complete Core Sample Level
Speedrun a map with at least %25 par time to spare
Track over 20,000 footprints
Turn off the Big Banger while it's playing loudly in zero-gravity during a Solo game
Restock a total of 50 medkits over your cleaning career by punching out of levels with medkits
Complete Uprinsing Level
Complete Pestilent Penitentiary Level
Complete Penumbra Level
Complete Unrefinery Level
Find all the unique and hidden collectibles and return them to your office
Complete Gravity Drive Level
Receive 12 Employee of the Month awards
Complete Overgrowth Level
Find all the hidden painted eggs and return them to your office
Incinerate 2000 items
Complete Paintenance Level
Collect a head from each species in cleaned levels and take them to your office
Complete Frostbite Level
Spill 100 dirty buckets
Mop up 10,000 splats
Get fired!
Take the Big Banger Supernova out of Unearthly Excavation and into another work-site and turn it on
Unlock Bob's super secret secret stash room
Complete Unearthly Excavation Level
Find Bob
Throw 100 items into sand traps
Get eaten
Blow up a fellow worker
Complete Athena's Wrath Level
Complete Revolutionary Robotics Level
Complete Hydroponic Hell Level
Transfer a Goo-Jar to another work-site and infect something
Complete Waste Disposal Level
Complete Caduceus Level
Steal 30 or more Personal Identification Devices (P.I.Ds) from cleaned levels and take them to your office
Complete Cryogenesis Level
Take a lit flare from a fellow Janitor
Tame the uncontrollable fury of the Big Banger by incinerating it
Cleanup your own personal Office by removing any Trash, Viscera and Blood; excluding trophies, then leave
Clean any map adequately
Get the Employee of the Month reward for your office
Complete Evil Science Level
Collect the chainsaw, boomstick, cursed hand and the evil book and return them to your office
Collect the mask and machete and return them to your office
Collect the clawed glove and return it to your office
Collect the white mask and butcher knife and return them to your office
Collect the axe and return it to your office
Collect the ring and return it to your office
Clean the entire House of Horror level
Destroy 200 items in the woodchipper
Get consumed by an inter-dimensional crack in space-time
Destroy the Bad Banger
Allow the Banger to ascend to its rightful place among the heavens through the use of an orbital beam weapon
Using an orbital beam weapon, destroy the symbol of your most hated overlord; cats!
Clean the entire Vulcan Affair level
Find all the unique Collectibles in the Vulcan Affair and return them to your office
Bring about the unfortunate meeting of Double-Oh Banger and Shark
Feed the ever hungry Sharks 500 items they can either devour or destroy
Foolishly activate the Death Ray
Get turned into mist by an orbital beam weapon
Lock another player inside a holding cell where they belong
Go for a swim with Sharks