I have played this game for 7 hours now and every single 7 wave normal difficulty map has ended to Flesh Pounds raping us in 6th or 7th wave. They are way too overpowered at that difficulty level. Enemy that can take 20+ shotgun blasts and kill you in 2 seconds is way too much. Killing it with 6 men team takes more time than it takes for him to kill one or two of us and then another one spawns and finishes the job.