Full list of all 53 Gigapocalypse achievements.
The base game contains 48 achievements, and there is 1 DLC pack containing 5 achievements.
Defeat boss 12 times
Destroy 1500 buildings
Destroy the cult building 5 times
Slay 5000 humans
Buy your first piece of furniture
Clean Giga poop 10 times
Get 5 meat on a single run
Defeat boss 6 times
Zap hawkmen 5 times
Reach the maximum level of one mutation
Feed Giga 10 times
Acquire 40 Power Up(s)
Reach maximum level with any skill
Finish the Wild West level
Defeat boss 3 times
Take 125000 damage in total
Destroy 500 buildings
Acquire 20 Power Up(s)
Take 50000 damage in total
Slay 1000 humans
Reach level 10 with any Giga
Finish the Suburbs level
Acquire 10 Power Up(s)
Take 10000 damage in total
Acquire 5 Power Up(s)
Equip a pet
Reach level 2 with any Giga
Meet the dancing clown 10 times
Meet the alley gator 10 times
Meet the vigilante 7 times
Destroy the totem 10 times
Reach level 30 with any Giga
Reach the maximum level with all Giga
Finish the Knight Age level
Finish the Lost Island level
Finish the Metro Dome level
Finish the Eternal City level
Equip pets in all slots of any Giga
Feed, clean and play with your Giga for the first time
Unlock a new skin
Unlock all skins for any Giga
Take 200000 damage in total
Take 1000000 damage in total
Reach maximum level of any pet
Buy 20 pieces of furniture
Unlock the last skill with any Giga
Slay 15000 humans
Destroy 3000 buildings
Zap 10 Duck Knights
Solve 5 chess puzzles
Light 10 fire beacons
Destroy 10 meteors
Defeat Octopy 5 times