Here is the full list of all 49 DungeonUp achievements.
Killed a non-boss monster with one blow.
Killed 10 monsters of the same kind in a row.
Finished Zone 1 in Story Mode.
Finished the tutorial.
Finished Zone 2 in Story Mode.
Finished Zone 3 in Story Mode.
Finished Zone 4 in Story Mode.
Finished Zone 5 in Story Mode.
Finished Story Mode.
Defeated the Skeleton King three times.
Defeated the Vampire King three times.
Defeated the Dwarf Captain three times.
Defeated the Illusionist Lord three times.
Defeated Zreluhm three times.
Defeated the Lamp Genie three times.
Finished Zone 1 without using a Bomb.
Finished Zone 2 without the Cross.
Finished Zone 3 facing the Dwarf Captain directly.
Finished Zone 4 without the Antimagic Ring.
Finished Zone 5 without the Fire Sword.
Finished Story Mode without buying keys.
Finished Story Mode without buying anything.
Finished Story Mode without dying.
Finished Zone 1 in Maze Mode ten times.
Finished Zone 2 in Maze Mode ten times.
Finished Zone 3 in Maze Mode ten times.
Finished Zone 4 in Maze Mode ten times.
Finished Zone 5 in Maze Mode ten times.
Found 100 Secret Paths.
Used a Soul Stone to respawn.
Used a Soul Stone to purchase an item.
Used Soul Stone to speed up the free key.
Spent 10 Soul Stones.
Killed a boss with one blow.
Reforged the Fire Sword.
Killed 1,000 monsters.
Opened 1,000 doors.
Picked up 100,000 gold.
Hoarded 10,000 gold.
Had 18 keys in your keybag.
Finished Zone 1 in 5 minutes.
Finished Zone 2 in 10 minutes.
Finished Zone 3 in 15 minutes.
Finished Zone 4 in 20 minutes.
Finished Zone 5 in 25 minutes.
Bought three Red Keys.
Opened all doors in a zone.
Killed all monsters in a zone.
Revived the Dwarf King.