A very quick to drop you into the fire game but an interesting one nonetheless, there's a cool variety of weapons included and a pretty decent way to switch. Though the ammo count is a little vague to see where trying to figure out. I did manage it but still could probably be a little more to center to make it a little clearer possibly.
Another thing a swell is the enemies are pretty small. Which was a bit surprising, it made it a little hard to find them let alone shoot them, sometimes since they're just very small arrows without too much of a defined silhouette. Which lead to me not really knowing how many there were. At least in my experience.
That's helped a bit by the different weapons variety somewhat, though some of them sort of feel useless. Especially 6, where it is a tiny, pretty low damage sorta homing attack. Which ends up not doing much to the hordes of enemies that popup with it's single target damage and pretty slow projectile speed.
Overall though, it's an interesting base that I would be very interested to see where it might go with some polish and possibly some changes. But I'm more interested to see what ideas you may come up with to add.