One thing that i want to point out, that so far i didn't saw anyone in the comments point out is that you don't have really a reason to move, other than dodging enemies, which it doesn't happen until at later levels of the game, when the enemies become more and more stronger. Also i think that the enemies become a bit too strong each level, i had difficulty dodging them all with how many enemies were on screen :/

Really cool concept tho!! I like the Music(s) in the game!! Good Job!!

Pretty nicely done! I found that the red shapes weren't standing out enough from the dark grey background, so I would suggest changing the color palette a bit. Good upgrade system, though in the long run some of the upgrades might need some slight rebalancing (Double armor seemed incredibly strong to me).

The upgrade system is the key of the game. It was fun to play. It feels more like a freeze mechanic that an "other side" mechanic. Musics are great. Well done.

I liked so much about this! The upgrade feature really kept me interested. The overall concept really worked. Great job!

Cool concept and music!

Nice music