Here is the full list of all 31 Bloody Trapland 2: Curiosity achievements.
Collect first crystal
Complete a level without any deaths
Activate first artifact
Complete 5 levels without any deaths
Complete 3 levels without any deaths
Complete 10 levels without any deaths
Complete 20 levels without any deaths
Reached Desert world
Reached mnt world
Reached cave world
Unveil last level
First time on a boat
Close encounter
Open first secret door
Find secret passage
Find temple entrance
Defeat Skogstrollet
Found hidden passage
Found hidden coin
Picked up coin
Defeat desertboss
Activate hidden btn
Find hidden coin
Defeat mnt boss
Open passage with button
Stinky unlocked
Find hidden entrance
Defeat cave boss
Collect first coin