Full list of all 84 A Robot Named Fight! achievements.
The base game contains 78 achievements, and there is 1 DLC pack containing 6 achievements.
Defeat all Factory bosses
Discover the Coolant Sewers
Defeat all Cave bosses
Defeat Ooze Hart
Discover Every Teleporter in a Run
Kill 20 Champions
Defeat the Megabeast Core
Discover The Beast's Guts
Defeat the Megabeast thrice
Defeat the Megabeast six times
Donate 343 gray scrap to shrines
Defeat Metal Patriarch
Defeat Blightbark
Defeat the Megabeast four times
Defeat the Megabeast twice
Donate 216 gray scrap to shrines
Defeat White Wyrm
Donate 125 gray scrap to shrines
Defeat Flesh Adder
Defeat all Surface City bosses
Defeat Abomination
Defeat the Megabeast once
Collect 4 orbs in a single run
Donate 27 gray scrap to shrines
Collect 100% of the items in a run
Defeat Moleman Shaman
Have max health of 20 or higher
Have a shot speed of 22 or higher
Defeat Wall Creep
Defeat Mouth Meat
Discover The Buried City
Discover The Factory
Defeat Cephalodiptera
Defeat Beak Lord
Defeat Mouth Meat Senior
Discover The Caves
Die
Defeat Sluggard
Defeat Polyphemus
Defeat the Megabeast five times
Collect 4 energy weapons in a single run
Defeat the Megabeast in under 35 minutes
Defeat the Megabeast Core in under 50 minutes and collect 100% of the items in a single run
Complete the game with a collection rate less than 15%
Donate 512 gray scrap to shrines
Donate 729 gray scrap to shrines
Have a max speed of 17 or higher
Have 18 or more nanobots at once
Defeat Leviathan
Defeat Stalkus
Possess 99 Scrap
Possess 3 of Each Archaic Scrap
Fire a shot size of 4 or greater
Defeat Corrupted Miner
Discover the Crystal Mines
Possess 81 Nanobots
Defeat Skin Deviler
Have Explosive Bolts that Deal 8 or more Damage
Have Fire Bolts with an attack delay less than 0.2
Complete Boss Rush
Complete Exterminator
Complete Mega Map
Defeat 14 Different Bosses
Kill 15k enemies
Discover Every Area