Here is the full list of all 17 RUKIMIN's Disappointing Adventure! ~SHOBOMI AND THE PHANTOM RUINS~ achievements.
Clear with less than 5 deaths
Meet a PRINCESS BELL!
Completed the mission.
Completed faster than 10 minutes.
Finished the tutorial.
Died 10 times
Died once.
Game over on the game select scene.
Game over on the title screen.
Overflowing from the screen.
Died 50 times
Died 100 times
Eat rice balls
Beat BLOCK KING!
Beat BLOCK KING! ver2.0
Returned to the starting point.
Falling walls hold secrets.