No missable achievements (plus 23 unknown)
Sign in with Steam or Xbox to track your progress, and:
Unlock the Alpha Armor.
Unlock the Tau Armor.
Obtain the Spinner.
Unlock the Mu Armor.
Unlock the Psi Armor.
Beat a boss without taking any damage.
Clear every dimension.
Reach the end and unlock Super-Frame Mode 1.
Complete the game.
Score 25,000 In Score Attack Mode.
Obtain every treasure.
Score 50,000 In Score Attack Mode.
Unlock the Omega Armor.
Reach the Sun.
Score 100,000 In Score Attack Mode.
Reach the end for a second time and unlock Super-Frame Mode 2.
Achieve a x100 hit combo.
Unlock Super-Frame Mode 3.
Unlock Super-Frame Mode 4.