I'm not going to rate this campaign, because 2 of the chapters didn't work for me, and those that did work were pretty average, I wouldn't be surprised if this was impossible on expert considering the bs tank scenarios you get put in sometimes. Chapter 1 wasn't actually that bad, it wasn't great, but not bad, it had some nice elements to it, specifically the map design in general and the minor puzzles. Chapter 2 was pretty bad. This is were you're put in a tiny room, and you have to fight two tanks, I seriously doubt it's possible on expert. And then, you have to fight 3 more tanks afterwards, but you do get some running space at least.What's that? Last one alive, be ready to shoot a smoker when you're about to reach the saferoom too, or it's game over. Chapter 3 wasn't anything too special, an average open map with two panic events and a small search for items scenario. The 2nd last chapter was pretty bad too, just because it was too short in my opinion and the finale was GARBAGE. In the finale, you have to fight two tanks straight away, they spawn right behind you in the saferoom, then after a short walk, you enter a room and the door closes and in complete silence..... "The survivors have escaped!" wat. I wouldn't recommend this campaign, definitely not on expert, if you want to have a laugh at the bad elements of it, go ahead I suppose. The bot detection worked fairly well, only a few instances were they wouldn't pick stuff up. I didn't really encounter any glitches or bugs thankfully. That's about it.