Here is the full list of all 32 Blocks That Matter achievements.
Complete 20 Bonus Levels
Collect 40 Stars
Complete "The Underground Rescue" with 100%
Collect 20 Stars
Collect a Green Star
Start and finish "The Underground Rescue" in a single game session
Collect 10 Stars
Complete 10 Bonus Levels
Complete "The Invader" without having burned a wood block
Collect 40 Blocks That Matter
Collect 3 BTMs made by french developers
Complete all the Chocolate Update levels
Collect 20 Blocks That Matter
Collect the 3 BTMs that inspired this game
Complete "An Ice Glitch" saving 4 blocks of sand
Destroy 4 lines of 8 blocks at the same time in "Manual Tetris"
Free Alexey and Markus
Upgrade Tetrobot so he can drill crystal blocks
Collect 10 Blocks That Matter
Avoid the death of the fire slime in "Collateral damage"
Playtest a level you’ve created with the ingame level editor
Play a community level and rate it
Perform the longest possible fall in the game
Upgrade Tetrobot so he can drill metal blocks
Draw all possible tetrominoes shapes in puzzle mode
Watch the credits until the end
Join the Blocks That Matter Steam group
Squash a slime with a falling block
Upgrade Tetrobot so he can destroy lines
Die by kissing a slime
Collect your very first Blocks That Matter
Experience the effect of the nanoreset explosion