The noises, while annoying, DO serve a functional purpose. I didn't understand WTF was going on until I realized: Dragon in corner counts your moves, foghorn is the 5-or-less-warning, "AOOGA" but stressful is the "LAST MOVE" alert, and of course yelling like you burned your hand is "WRong move"
Protip: Keep dying to weak swarm-type enemies? Area Burst towers take CARE of swarmers. They're pretty solid on their own, now a viable strategy for ?Ghost levels, and they're also THE strategy to basically mess Splitters up.
Ahhhh, the shotgun. A good gun with other upgrades but you should have picked a less powerful gun rather than a SPAS-12. Tjhose things are mighty and will make it known.
Also, pretty sure getting a shotgun blast to the face will annihilate any head. Undead or not.
I do like the addition of the speed bost cutting down your time till next point by the same amount of time. Taht makes it worth saving up. GJ, developer. GJ.