I liked the well crafted enemy waves, variety of types and the boss fight!
I also liked that each character ship has a unique playstyle. The weapon upgrades felt nice too.
Having the screen texts change to German if you play as Kiara was a really nice touch!
The hidden characters are... very hidden XD. Without reading the manual it would be really hard to find them in regular play conditions.
Improvement suggestions:
- I think the sprites need a bit of work. They're great for a solo developer in a time constrained jam, but if you decide to expand/polish the game afterwards, this is a good place to focus on.
- The medals system needs to be explained better (and in the game, not in a text file). I got a poor score on my first clear and only managed to enter my initials on my second run when I went after the hidden characters after reading the manual spoilers. I didn't even clear the stage but got a high score lol
Good work!