I plan on having different difficulty modes. Here is what they do:

Easy: Infinite lifes, Invincibility time is longer, You can take 2 hits before death.
Normal: 3 lifes, infinite continues, One hit death (can get shield for extra hit)
Hard: 3 lifes, 3 Continues, One Hit Death (no shields) Less Power Ups.
Hardcore: One hit, then your let’s play is over. No power Ups, Enemys are faster.
Kiazo: Just like Hardcore, but the stage itself can kill you, you have to find ways around the instant death.

I also plan on a mirrored mode which is unlocked once you beat the game. It’s where you play all stages mirrored, and the stage order is backwards.