The pixel art is nice. The gameplay flows fine in arcade style. The variety of weapons makes it engaging to keep fighting and discover more weapon types. But I think the lifespan of weapon drops are too short.

You did well in a short time as a starter. I hope you can keep the will to learn game dev as it is one of the most difficult hobby to learn that can often lead to burnout. Keep up the good work.

This is a pretty fun game! Knocked out a bunch of aliens and got to try the handheld railgun, haha. The pixel art is a slam dunk here as well!

Pretty simple ad pretty fun! good work!

This is a very simple game, but at least much better than mine...

The screen shake effect was a good addition...

And the blood effect when alien hit...

It is much better than the first prototype you submitted... The guns still felt underwhelming...

Maybe if you pick up the same gun again, next time add +1 ATK to the gun because once you get the gun and you pick it up again it does nothing at all for now...

This is a great foundation for a game. It is stable, consistent, and very easy to pick up and understand. I would suggest adding more feedback to indicate when both you and your opponents are taking damage.