Here is the full list of all 70 Mighty No. 9 achievements.
Complete all themes in single-player Challenge Mode.
Complete any stage by dashing only 9 times or less.
Complete any stage by jumping only 30 times or less.
Complete the Factory stage within 9 minutes with all transformations.
Complete every SPRINTER! technical bonus.
Complete any stage without taking damage.
Defeat all Mighty Numbers with only normal attacks.
Defeat all bosses with only normal attacks.
Achieve all FINE PLAY! technical bonuses in the Robot Factory boss battle.
Complete any stage with a 100% absorption rate.
Complete any stage with Beck's feet touching the ground for no more than 1 second.
Complete any stage without absorption combos or technical bonuses.
Complete any stage without pressing normal movement inputs for longer than 1 sec. at a time.
Complete any stage without using healing items.
Complete every AMAZING! technical bonus.
Complete the Water Plant stage without being frozen.
Complete Mighty No. 9 on the 9th.
Attack the final boss with every single Mighty Number ability.
Complete any stage without using a ReXelection or missing an attack.
Achieve all FINE PLAY! technical bonuses in the Opening Stage boss battle.
Don't attack for the first 30 seconds of a boss battle.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 7 boss battle.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 5 boss battle.
Defeated a boss with 1% or less health on Beck.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 3 boss battle.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 6 boss battle.
Drop 100m without touching anything.
Ascend 100m without touching anything.
Complete the game without restarting on HARD difficulty.
Complete the game within 120 minutes.
Complete the game within 60 minutes.
Attack and absorb enemies 5 times in the air before landing.
Complete the City stage without taking damage.
Achieve an A rank or higher and 100% Xel absorption rate result.
Complete Boss Rush Mode for the first time.
Complete Boss Rush Mode in less than 20 minutes.
Complete the game on HYPER difficulty.
Complete every QUICK CLEAR! And NICE CLEAR! technical bonus.
Witness every helping event by Mighty Numbers.
Achieve a WONDERFUL! technical bonus.
Score 1,000,000 points in total.
Complete the game on HARD difficulty.
Get defeated by a boss at less than 10% health.
Achieve an S rank result.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 2 boss battle.
Complete the game on NORMAL difficulty.
Beat the final boss with zero lives remaining and low health.
Achieve all FINE PLAY! technical bonuses in the Last Stage boss battle.
Maintain ability boosts for 60 seconds in any stage.
Complete a stage with Call.
Achieve all FINE PLAY! technical bonuses in the Prison boss battle.
Get 50 100% Absorption combos in a row.
Get 40 100% Absorption combos in a row.
Complete 8 main stages and rescue all Mighty Numbers.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 4 boss battle.
Defeat Mighty No. 5 before he detonates his special attack.
Get 30 100% Absorption combos in a row.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 1 boss battle.
Get 20 100% Absorption combos in a row.
Get more than 10 game overs in your play lifetime.
Score 100,000 points in total.
Activate all ability boosts at the same time.
Defeat any Mighty Number without letting them heal.
Achieve all FINE PLAY! technical bonuses in the Mighty No. 8 boss battle.
Score 10,000 points in total.
Complete any stage with just a single death.
Complete the opening stage.
Get 10 100% Absorption combos in a row.
Get 5 100% Absorption combos in a row.
Get 3 100% Absorption combos in a row.