Here is the full list of all 30 Megabyte Punch achievements.
Defeat General HB-03
Find the Megabyte Punch arm part
Destroy 500 enemies
Find the hidden level
Jump 5 times in a row
Defeat the Ice-Beak Assassins
Defeat Grand Khotep Muer
Defeat Grand Khotep Scarb
Defeat General HB-02
Defeat Warlord Bouldar
Destroy 100 enemies
Collect 8192 bits
Defeat the Emperor
Win the tournament
Win the tournament without dying
Complete the adventure mode!
Defeat the big boss without losing a life
Collect all 150 parts
Find all 30 hidden colors
Find the flying ruins
Complete the frostbyte challenge level
Spend over 5000 bits in the shop
Destroy 1000 enemies
Win the tournament with no ability parts equipped
Break 16 enemy shields with your pelvic thrust
Bounce from the hot plates 10 times in a row
Clear the Electro Caves Stage 1 within 30 seconds
Reflect a projectile 10 times in a row
Win all the special parts from the tournament.