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