94 events, no water levels (I always hated water levels...)
I recommend playing in fullscreen
The spinning platform once you get the dubjump, you have to use it to get to the top left of it. This IS possible, just stay near the center of the platform and try dubjumping!
Also, might as well spoil the secret since this game is 6 years old and probably no one got it...The armor upgrade is located above the wall to the right of the starting point. After returning here, use dubjump to access it.
Some enemies can't be killed! Firestars, poison clouds...