liked
good clean visual style
good variety of obstacles
like that there are multiple paths
music is a pop
using fan momentum to get high enough was cool but not sure if intentional
chaining fans is cool
timer is a nice touch
suggestions
need coyote time please
checkpoints please
make it clearer how you die, maybe dont insta restart but have a death anim and a popup that says press 'r' to restart
sound effects would add a lot
fans are inconsistent in boosting
have a little free movement in the camera (check out how smb does it)
maybe implement timer in a set goal, like you get an A+ if you beat the level in under 30 seconds
variable jump would be nice (hold space to jump a little higher)
optionally have a little more color? color code spikes and enemies to make it clear what's dangerous