Dog tags need a despawn timer. Sometimes they drop off screen and just stay there sucking up resources. I also don't always feel like picking them all up once I have everything purchased.
run and load is pretty useless because of the gun limitation. Why not make it a % move speed while reloading increase for all guns that increases with the skill's level? Like 30/50/80 or something.
Ohhhhh! It looks like the enemy truck's sound effect isn't affected by muting and I must've killed it with the shockwave right after turning the music back on.
Weird bug: I had the music muted for a while, and then randomly some weird motor type sound came on. Unmuting the music made it go away. (not drowned it out, it's just gone). wtf?