Survival achievements
Survival achievements unlock when a run in survival mode clears round 18 with tries left: one for each class, and one for keeping all 5 tries.
For the Trees!
Survive as Ranger
That Might Be Poisonous
Survive as Reaper
Burn! Burn Everything!
Survive as Pyromancer
Go Berserk!
Survive as Berserker
Let's Go On an Adventure!
Survive as Adventurer
That Was Magical!
Survive as Mage
Perfection
Survive with 5 tries left
Trust me, I'm an engineer!
Survive as Engineer