Here is the full list of all 26 Dungeon Minesweeper achievements.
Appear in the dungeon
Collect 20 iron
Getting caught in a trap
Destroy all enemies on the map
Pass the combination lock
Complete the game without using fireballs
Probably
Activate all totems
Get out in a different way
Get 40 rubies(You should have 40 available)
Get the 1st relic
Get the 4th relic
Get the 2nd relic
Get the 3rd relic
Defeat the boss
Get all achievements
Get view bonus
Find all the prisoners and complete the task
Complete the task of goblins
Reach 50 rubies in endless mode
Open the dangerous chest
Use the explosion
Complete in-game training
Collect all the coins and chests of gold on the map!
Defeat the boss in hardcore mode
Open red chest when you have 3 relics in hardcore mode