Absurdly & and pointlessly difficult campaign. Compared to the original, it's "shorter" alright, but that's only in map length, because you will be dying far more often on this campaign compared to its predecessor. Tons of troll tank spawns (in the saferoom as well..), impossible unless you're playing on a modded server that favours the survivors, a huge guessing game ensures on chapter 2 onwards, as you have to guess the correct invisible path whilst smokers try and kill you... awful. The finale is just a super long survival section whilst an infinite array of tanks spawn from the centre of the map. Unfun, boring, unoriginal, waste of time.