Full Gameplay Walkthrough...

Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Backstab	Defeat an enemy without breaking their shield.
Coup de grace	Defeat the Governor.
Deadeye	Kill thirty enemies using ranged weapons.
Dedication	Complete all achievements.
Environmental hazard	Escape the rolling logs.
Explosive Delivery	Detonate the exploding barrel while it is still on the enemy's back.
Exterminator	Defeat the Lindwyrm.
Fairytale	Finish the game with all crystals in your possession.
Firestarter	Kill thirty enemies using fire.
Fortified	Collect all the crystals in the Icebound Peaks.
Ice Age	Kill thirty frozen enemies.
Keep it dry	Escape from the flooding cave.
Not the bees!	Kill the enemy using bees.
Poking the bear	Pass the trial of Veles.
Resilient	Collect all the crystals in the Eldenwood.
Returned to sender	Kill Goat enemy by throwing weapon back at him.
Spellbreaker	Defeat the Servant of Chernobog.
Time Lock	Freeze four enemies at once.
Tough	Collect all the crystals in the Governor's Fief.
Unbreakable	Collect all the crystals in the Shadowcrest.
Venomous	Kill thirty enemies using poison.
War Machinery	Escape the battering ram.
Wasn't me	Kill thirty enemies using environment.