Here is the full list of all 32 Inline achievements.
Find the option hidden in the options menu, and enjoy them "soft-body physics"
Use the Gameboy command in the console and enjoy tastelessly emulated graphics from the past
Click and hold main menu title for 5 seconds
Reached more than 9000 score in total
Skip a single block
Lose with no lines cleared
Beat your own highscore 3 times
Play Custom Mode
Skip when no more skips are left
20 skips used
Reach combo of 3
50 lines cleared in one session
Drop a shape outside of the grid
Spin one shape 20 times
Rotate a shape that will not change the orientation
Repeatedly press ESC at the main menu to display the game with inversed colors
Type RAIN at the main menu and let the rain work its magic
Reach level 5
Reach level 5 without skips
Reach streak of 3
50 shapes placed
Reach max level 10
Lose after using 5 skips in a row
Play 20 normal games
Completed 3 lines in 9 moves
1000 lines cleared
Reach streak of 5
Reach 600 score in 50 moves
Reach a combo of 4
Find every easter egg
Try to access debug features and meet their guardian
Push an AI to crash the game