Achievements

AchievementHow
First BloodWin a fight in the story.
Fortune FavoursLand a Critical Hit.
Deadly AimLand 25 Critical Hits in one playthrough.
Cursed DiceRoll 20 natural 1s in one playthrough.
Hunter of the NightDefeat 100 foes in one playthrough.
WolfsbaneDefeat 25 wolves, dire wolves and werewolves in one playthrough.
Rest in PeacePut 50 undead to rest in one playthrough.
Overwhelming ForceDeal 50 damage or more with one blow.
Not a ScratchWin a fight against four foes or more without a hero taking damage.
Last One StandingWin a fight with only one hero still on their feet.
Not TodayRoll a natural 20 on a Death Saving Throw.
Burgomaster's PurseHold 1,000 gp at once.
None Left BehindReach an ending without losing a hero for good.
Proving GroundsWin a Skirmish.
Against All OddsWin a Skirmish rated beyond High.
Dress RehearsalDefeat Strahd in a Skirmish.

Reaching each ending is an achievement too.