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