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