No missable achievements (plus 45 unknown)
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Win your first battle
Make an enemy crystal explode from fire
Use doors to stop fire or water from spreading.
Ignite 5 enemy rooms at the same time
Put a crystal underground
Hide your room that was visible to the enemy by moving it or using the Anti-Eye spell.
Win a match in under 5 rounds
Gather 50 Mana
Remove water from a flooded room by digging earth under it
Have 5 of your rooms burning at the same time
Have all your rooms destroyed except the archmage.
Find the enemy Archmage room by using the Eye spell
Equip Archmage with doors and armor
Save a room by moving it (the old block is destroyed the same turn)
Build a tower 10 blocks high
Build 7 libraries at the same time
Miss three times in a row using a Ray or Disturbance spell
Reach round 25
Have 10 crystals at the same time
Build 25 rooms
Build the lowest dungeon room possible
Win an online match by using bombs only.
Win a match without using any spells
Dig out 15 blocks of earth
Win the game by using a Collapse spell
Have a fire put out with water
Pump water from the Archmage room
Use 5 lightning strikes in one attack
Destroy enemy Archmage with a spell reflector
Win 10 online matches in a row
Sink the enemy archmage room separated from the dungeon with doors.
Win the game with a succcessful use of the Rat spell.
Damage 5 rooms using one Earthquake spell
Have an underground-only construction by turn 15.
Use 5 movers during one round
Win a match without using any Dwarves.
Survive and extinguish 5 burning rooms during one turn
Save 5 rooms at the same time with the help of the Deratiser improvement
Use all possible spells in one attack.
Build a tower 10 blocks wide
Put 3 roofs on your tower
Make 10 enemy blocks fall down at the same time
Use the levitronus room to hold your tower with no ground blocks left.