Glad you liked the game.
Your feedback is good and noted.
Most of them are already fixed in the dev version but rest are a definite things to focus on on the next release.

Gradius was a heavy inspiration as well as Xenon Mega Blast and Raptor: Call of the Shadow back from our childhoods.

The upgrades have been reworked and will have more variety as well in the future releases to more pressure their functionality offering varying play style approach with each of them.
Single collision deaths are also fixed so you can bump in on enemies and survive if you have shields available.
Enemy variety is also reworked quite a bit and there is way more to come as well as more obstacles and stuff to interact with during fighting.

You will definitely going to see more about the game if you'll follow us and the games progress.

Thanks, glad you liked our game.
For some browsers and OS, there was a bug in the mouse lock extension we used that made it wonky at times, it was fixed a few days ago, but affects the game jam release until we can make the official update to it.

Gradius is a game from our childhood and a definite inspiration along with master pieces like Xenon Mega Blast and Raptor Call of the Shadows.

Just wait till you see what we've made the game during the judging period, it's gotten quite a big additions to it and will be made as a full fledged game with multiple worlds to wage havoc in.

Glad you liked the idea.
The red area is kind of a cell membrane that has viscosity for everything that moves through it.
That's a nice idea that it would nudge the affecting core as well, I'll have to look on implementing on it.

Glad that you liked it.
Gradius was certainly a huge inspiration.
I've already upgraded the game play on the dev veriosn quite a bit and ther is so much more to come later on.

Great to hear you liked our game.
The health visibility is a thing I needed to address but ran out of time.
I've already implemented it in the dev version as well as upgraded the game quite a bit fom the game jam version.
And there are loads of more content coming up already in development.

Thanks!
It was a blast making the game, and I've gotten quite a lot of good feedback on how to continue after the jam and I'll definitely keep working on this with lot more content and mayhem.

So glad you liked our game <3
The music is done by the awesome talented Fatal Exit.

For firing backwards, there is, get the upgrades.
Missiles fire backwards and home in on closest enemy.
Turret fires to the farthest enemy.
Drone Fires to the closest enemy.

Glad you liked our game.
Collision is instant but shields eat away the blaster hits until they are gone, and they will replenish gradually.

There'll definitely will be more of the game and story to be coming up after the jam.

Thanks, glad you liked it even when it was a bit challenging.
I was to make it so that if you have shields you could survive a bump with an enemy but ran out of time.
Will definitely return to this issue after the jam.