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