"ooh look at this inescapable death trap that you couldn't possibly do anything about without knowing it's there. look at this enemy that locks you in place and hits you for 92 by looking at you. do you like how the maps are so fucking dark that you can't see anything? do you like being stuck in tight hallways with ogres? is this FUN? are you having FUN?"
Zerstörer comes from the (thankfully now long dead) "unfair design == challenge == fun" school of game design. once you know where all the "Fuck You, Die" spots are the difficulty drops to ~0. skip it and play Warp Spasm, I have no idea why Zerstörer is tagged mustplay on Quaddicted.
