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 total in Scramble.
Complete Tier 5 in Scramble.
Complete all acheivements.
Score 5,000,000 in any 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 5 skulls on every scenario of the story campagin on Rift Lord difficulty.
Complete the story campaign on Rift Lord difficulty.
Earn 1,000,000 coin.
Acquire every item in the game.
Complete Tier 2 in Scramble.
Reroll a debuff in Scramble.
Kill 10,000 minions.
Survive 10 waves in a single endless match.
Survive 25 waves in a single endless match.
Complete the main campaign.
Unlock all gear slots.
Score 500,000 in any campaign scenario.
Purchase all upgrades for a single trap.
Beat the first war scenario.
Earn 100,000 coin.
Complete any Weekly Challenge.
Purchase a new piece of gear.
Upgrade a piece of gear.
Kill 100 minions.
5 Skull one "Cold as Eyes" scenario on Endless
Beat all "Cold as Eyes" scenarios
5 Skull all "Cold as Eyes" scenarios on Rift Lord
Kill 1000 Cyclopes
Kill 250 Cyclopes
Purchase all 3 pieces of "Cold as Eyes" gear
5 Skull one "Tipping the Scales" scenario on Endless
Beat all "Tipping the Scales" scenarios
Kill 1000 Tuatara
5 Skull all "Tipping the Scales" scenarios on Rift Lord
Kill 250 Tuatara
Purchase one upgrade for any "Tipping the Scales" gear