Very cool game! Despite the heavy use of assets, the game felt quite polished and also very cohesive. Controls feel unintuitive at first, but when you get the hang of it, it starts to get unexpectedly easy and very fun to move around.
A couple of suggestions if you plan on expanding the game (which I hope you'll do since the game has potential):
- Some objects don't have collisions enabled (you can go through them);
- Consider adding a "crash" mechanic if you fly towards an object, like a planet, and hit it.
- The "laser" mechanic of both the player's spaceship and the enemies spaceship needs some work/polish, for example make the laser have to charge up for some seconds and fade out with some nice effects when it deactivates (maybe you can find some free laser assets on the Unity asset store), plus better laser sounds would also be nice to have, to make the lasers feel more powerful.
- The menu showing the "tutorial" text shows an "X" icon on the upper right corner, but you can't ever close the popup, since the mouse disappears while you play, and there seem to be no keyboard key bind to close windows (maybe I'm missing something?).
- I'd suggest experimenting with different controls, for example a different way of steering your ship by using the mouse to point in the direction you want to move to.
Other than those small adjustments, the game was quite fun, hope you'll consider expanding it a bit more. Good job!