just made an account to make a suggestion to the developer, did you try using a shotgun?, what i mean is to add range damage to shots in order to make the player think more on the moment they are gonna shoot, plus add a bit of randomness on the drop rate of ammo (something like 1-3 sec) to drive the player on more of a survival tactic during that time (honestly the movement and maps allows this to be fun specially if you are not killing enemys)