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