Real-life arrows don't pierce through enemies, though maybe I can add a perk / talent when I get around to add that that will allow you to hit two targets or something. And yeah, literally every review mentions how OP the AK-47 is.
I'm hoping to mitigate how OP the damage upgrade is once I replace those three skills with the talent trees. That way instead of adding 10% damage per tick, maybe I can have it tack on an extra 1-2 points of damage since the damage and health have been changed to use a d20-like system.
I'm planning to add blood pools (maybe even in the next release). Only thing I need to do is figure out how to make the blood splatter effect using the particle system I have.
And yes, I love the soundtrack, although it's unfortunate it has to be removed before the game is done because it's not licensed or anything. I'm planning to sample those songs though and apply them to a genetic algorithm which will generate original music that sounds similar to them.