In general, the game was really good and I enjoyed it. It feels very polished and looks nice.
I don't think anything was outright bad, but if I really had to pick something, it would be the tutorial. It's honestly one of the better tutorials I've seen in an indie game, but there are a handful of minor points of friction making it feel like 80% instead of 100% there. I like it's pacing and thoroughness. My minor points:
- Forcing it shouldn't be required. it's really annoying if you already know how to play.
- Nowhere does it teach you that shapes disappear on collision with the same shape, but go through different shapes. It can be learned eventually, but it took me a bit to realize this, as it seems pretty important.
- The tutorial never actually test if you learned the skill it just taught you. This could be a problem since as long as you kill all the enemies, you're moved on.
- Tutorial should pause when giving you instructions which is really bad at times when you give lots of text like explaining the wall abilities. I am a slow reader and missed half the text. I couldn't tell what the blue one did and missed that using them is a 2 hit process. It took me a long time during gameplay to figure those things out.
- A small thing is player's could get soft locked. It is possible to trigger the blue ability and be left with only a single enemy left. This can happen before you learn about how abilities work, and advancing the tutorial requires killing all enemies. I recommend not adding the abilities until that section of the tutorial arrives.
Overall, the game feels like it's missing something for longevity. I would have really liked to see more interesting level designs then them all just be shrinking squares. Something that makes you think where you aim and how to properly rebound. Currently there isn't much reason to aim. Just shoot toward abilities and let them rebound kills. Likewise, the upgrades feel really underwhelming. Its really just making things fly around more. There should be more verity and encourage playing differently. I also don't feel like enemy types don't change up much how you play.