A neat simple game that was fun to play. I like the straight forward gameplay and intuitive game mechanics. The gameplay loop is also quite addictive
Nevertheless, I do some criticism:
1. I wish there was some kind of in game cursor that can help me see where I'm exactly pointing at. I often find myself aiming outside the screen without realizing it
2. Adding some music would've also made the game even more exciting to play
3. Item drops are too small to see. I often can't tell the difference between ammo drops and health drops
All in all, I had fun playing this game. Keep up the good work