Here is the full list of all 41 The Tombs of Ultra 5 achievements.
Die 1 Time
Die 10 Times
1 Enemy Killed
5 Enemies Killed
10 Enemies Killed
1 Boss Killed
5 Bosses Killed
10 Bosses Killed
10 Damage Dealt
100 Damage Dealt
1000 Damage Dealt
1 Key Collected
10 Keys Collected
1 Potion Collected
10 Potions Collected
1 Level Cleared
10 Levels Cleared
Reach Level 20
Reach Level 30
Reach Level 40
30 Minutes Played
60 Minutes Played
1 Door Opened
10 Doors Opened
10 Levels Fully Explored
50 Levels Fully Explored
Kill All Enemies On 10 Different Levels
Kill All Enemies On 50 Different Levels