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