Get Implosion Pods to level 3 by picking up Green Energy Seeds as any Bioship.
Get Spin Laser to level 3 by picking up Yellow Energy Seeds as Hecuba or Polyxena.
Get Fire Petal to level 3 by picking up Yellow Energy Seeds as Orestes or Electra.
Get Bond to level 3 by picking up Blue Energy Seeds as Electra or Hecuba.
Get Nova to level 3 by picking up Blue Energy Seeds as Orestes or Polyxena.
Get Plasma Ring to level 3 by picking up Orange Energy Seeds as Orestes or Hecuba.
Get Seeker Laser to level 3 by picking up Orange Energy Seeds as Electra or Polyxena.
Complete Stage 1 on Normal difficulty or higher.
Complete Stage 2 on Normal difficulty or higher.
Complete Stage 3 on Normal difficulty or higher.
Complete Stage 4 on Normal difficulty or higher.
Complete Stage 5 on Normal difficulty or higher.
Complete Stage 6 on Normal difficulty or higher.
Complete Stage 7 on Normal difficulty or higher.
Complete Stage 8 on Normal difficulty or higher.
Complete the game on Normal difficulty or higher, without using level select.
Complete Stage 1 on Hardest difficulty.
Complete Stage 2 on Hardest difficulty.
Complete Stage 3 on Hardest difficulty.
Complete Stage 4 on Hardest difficulty.
Complete Stage 5 on Hardest difficulty.
Complete Stage 6 on Hardest difficulty.
Complete Stage 7 on Hardest difficulty.
Complete Stage 8 on Hardest difficulty.
Complete the game on Hardest difficulty, without using level select.
Reveal the hidden 1UP in Stage 2.
Reveal the hidden 1UP in Stage 3.
Reveal the hidden 1UP in Stage 4.
Reveal the hidden 1UP in Stage 5.
Reveal the hidden 1UP in Stage 7.
Reveal the hidden 1UP in Stage 8.