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