This probably doesn't warrant urgent attention, but I thought it was worth mentioning anyway:
Certain enemies, when dying directly next to a wall, will drop all their loot in one singular point. If this were to affect the amount of loot received, I certainly should hope to have this fixed, but regardless, at least being able to see how much they drop would be nice, too.
Ohh, thought that this was concerning how you can't knock back zombies or retrodes in corners, making them much more dangerous. You should deal more damage when you can't knock an enemy back, depending on how much knockback you had to begin with.