So, finally I was able to resist to click "New Game" again. The short playtime and the leaderboard always tempt you to give it another try. My final score (for now): 530
1. Does the game feel fun to play?
Yes! The controls, graphics, sound, and animation feel great and create a nice retro arcade feel.
2. What did you like about the game?
After the first few games, I briefly felt like I wasn't making any progress. But then I quickly learned the enemy behavior and was able to slightly increase my score each round. Predicting enemy positions with "!" and the spawn logic (always the same types and amount of enemies, but random positions) were definitely helpful in this regard.
3. What did you dislike about the game?
I think I would prefer to not die on the first hit.
While playing the wave count is displayed on the top. However I didn't had the time to look at it, while shooting. I guess it was around 13-15/30...would be cool to see the wave count at the end next to the score.
I think the game doesn't save the high score, right? At least for me it was down to zero again, after restart.
4. Is the game too hard or too easy
I think it depends which kind of players this game is made for. For me it felt like a steep difficulty curve, but I'm not a good arcade player at all. Maybe having a different difficulties implemented could help.
All in all this is a very solid and fun to play submission. Keep it up!