Reminds me very much of xiao xiao 4: https://www.newgrounds.com/portal/view/25718
Anyways that was a decent shooter with pretty good graphics overall, but way too short. The ammo system was a little redundant because it would automatically reload when you click, so there was no penalty for spamming. A minor bug was that the password for the elevator didn't go through even though I typed what was in the inventory.
Okay, but not the best.