visually i like what you're doing, but it seems like it needs a lot of work. there were a lot of little plants and things that just made platforming irritating instead of challenging, and i assume the coins were supposed to do something (cus they didnt??)
the whole idea of the colorful backgrounds and dance music plus a basic run n gun platformer is cool, tho. maybe think about adding some more sparkles or random shiny achievements that make us feel special, too.
also i died at one point from an enemy and the game froze up instead of respawning me. if i only had a limited number of lives you should consider making that a little more clear because i see that you said "restart or dont die" or w/e but i definitely respawned multiple times before this happened.
also, i really think it's a good idea to allow for WASD and spacebar for shooting, cus most people do not have a keyboard where arrow keys and enter are comfortable settings.
this was fun, tho. i hope to see a more polished version soon