Full list of all 38 Orcs Must Die! 3 achievements.
The base game contains 26 achievements, and there are 2 DLC packs containing 12 achievements.
Score 5,000,000 in any endless match.
Acquire every item in the game.
Complete all acheivements.
Survive 10 waves in a single endless match.
Survive 25 waves in a single endless match.
Complete the Drastic Steps campaign.
Complete the Drastic Steps campaign on Rift Lord difficulty.
Earn 5 skulls on every scenario of the Drastic Steps campagin on Rift Lord difficulty.
Earn 1,000,000 coin.
Score 5,000,000 total in Scramble.
Reroll a debuff in Scramble.
Complete Tier 5 in Scramble.
Complete Tier 2 in Scramble.
Complete any Weekly Challenge.
Complete the main campaign.
Earn 5 skulls on every scenario of the story campagin on Rift Lord difficulty.
Complete the story campaign on Rift Lord difficulty.
Kill 10,000 minions.
Unlock all gear slots.
Score 500,000 in any campaign scenario.
Earn 100,000 coin.
Beat the first war scenario.
Purchase all upgrades for a single trap.
Kill 100 minions.
Upgrade a piece of gear.
Purchase a new piece of gear.
Kill 1000 Cyclopes
5 Skull all "Cold as Eyes" scenarios on Rift Lord
Beat all "Cold as Eyes" scenarios
Kill 250 Cyclopes
5 Skull one "Cold as Eyes" scenario on Endless
Purchase all 3 pieces of "Cold as Eyes" gear
5 Skull one "Tipping the Scales" scenario on Endless
Kill 1000 Tuatara
Beat all "Tipping the Scales" scenarios
5 Skull all "Tipping the Scales" scenarios on Rift Lord
Kill 250 Tuatara
Purchase one upgrade for any "Tipping the Scales" gear