"It’s painfully short, unfortunately: perhaps ten waves at best. And like trying to pop balloons with a pellet gun at a carnival ride, none of your targets fight back. They also don’t come in from your flanks or attack you from behind. You don’t even have to engage your brain, thinking about when to reload – its endless clips - or when to swap out your gun to meet the next threat effectively. And criminally, you don’t get to pick up an energy sword and gut something."