The graphics style is very nice, it's a shame there is no sound at all.
Is it game over when all guards are dead? I didn't get that far, I just died.
I really like the mechanic of shooting armour off the guards, then they run away to rearm at the weapons rack, thats really nice.
But I'm not sure what happened at the start, did he spend all of his life in prison, then come back as an undead monster?
Overall good work.