Here is the full list of all 37 Stonerid achievements.
Clear all levels from toxic substances on normal or hard mode
Get all crowns on normal or hard mode
Complete all bonus levels
Complete 10 bonus levels
Collect 15,000 toxic substances
Complete the game
Get 10 crowns on normal or hard mode
Clear 20 levels from toxic substances on normal or hard mode
Collect 2,000 gemstones
Complete the Swamps
Complete the Cemetery
Get 50,000 points in one level
Complete the Caverns
Clear 10 levels from toxic substances on normal or hard mode
Collect 10,000 toxic substances
Kill 200 monsters
Collect 5,000 toxic substances
Collect 1,000 gemstones
Get one crown on normal or hard mode
Complete the Winterland
Die 200 times
Collect 500 gemstones
Collect all gemstones in one level on normal or hard mode
Kill 100 monsters
Complete one bonus level
Complete the Endless Autumn
Complete one level without dying on normal or hard mode
Die 100 times
Find all secrets in one level
Complete one level on hard mode
Clear one level from toxic substances on normal or hard mode
Complete one level on easy mode
Kill 50 monsters
Complete the Dark Forest
Die 10 times
Complete one level on normal mode
Complete a tutorial