Good controll, well done !

Wow, this was unexpectedly fun. The only things I can suggest are obvious visual upgrades and keeping closer to the theme - "colored objects" isn't quite the same as "neon".

Nice retro shooter vibes ON!   fine.

I love friendly cosmonaut too! :) Nice little game here. Good job creating it! Needs more Neon just like my game too.

Being able to hold the fire button would've been nice. "Extreme!!" difficulty was still easy but collecting the gems was quite a grind. It would be interesting if different colors of enemies had diffierent attack patters. Like one charges at you an attacks at melee, one shoots two bullets in a V-shape, etc. etc.

Give me some actual challenge, tone down the grind and make enemies more diverse and you've got a fun game! Good job anyway, had me entertained for a while :)