Thanks for trying the demo, glad you like it. :)
Good to hear that it felt like Metroid but different since the feeling I'm going for is basically "Super Metroid but not Super Metroid".
Also good to hear that it works on a lower end computer, I spent quite a bit of time trying to optimize it a week or so before release.
The light/glow issue is already on my list so I'll be fixing that at some point.
I'm not sure what "Serris attack" would be but the sound playing thing does not sound correct so I'll add this to the list, thanks.
Yeah.. breakable tiles still have some issues and I'll be improving on that over time.
The thing is.. I can't just increase the hitbox size since it's already a bit too big, meaning: if you shoot above the floor for example and the projectile moves along the floor but does not hit it, it will still hit a breakable tile at the same position as the floor even though it's not even close to it.
So, I'll have to look into other ways to improve that aspect.
Anyway, thanks for the feedback. ^^