I think you have a solid start here and a nice idea, but there's a few things  holding it back from a gameplay standpoint. First is that the cursor didn't lock to the game screen so I was constantly clicking off screen onto my other monitor and it was messing up my ability to aim.  Another thing is I noticed there was no sound or sound effects, which I feel are very important components to an engaging game. I also kind of wish there was a better visual representation of the different weapons and their ammo being fired. A simple weapon icon next to the ammo count would be a great way of displaying that, and having the bullets for both guns not be the same gray sphere would  help a lot too.  Last thing is minor but I feel like the scene is a bit too bright (even for heaven) as a lot of things feel over-exposed. I like the angel design, the classic style of angel is always fun.

looks good and controls well but the bullets don't seem to go where i'm aiming. and lots of times enemies wouldn't spawn, so i was just flying around. i definitely like the style and could see it being a lot of fun with some tweakage