No missable achievements (plus 15 unknown)
Sign in with Steam or Xbox to track your progress, and:
Kill 100 enemies.
Complete all buildings and towers of the fortress.
Upgrade all buildings and towers up to level 2.
Earn 10000 coins in total.
Upgrade all buildings and towers up to level 3.
Upgrade goblins to the maximum level.
Kill 1000 enemies.
Spend 10000 gold on resources.
Earn 10000 materials in total.
Improve all troll skills to the maximum level.
Upgrade tower weapons to the maximum level.
Kill the most powerful of the bosses.
Hire 30 mercenaries.
Complete all remaining quests.
Survive at least 20 waves without losses at the Survival mission.