It's just downright irritating and borderline impossible to complete on master (and there's no point playing it on easy as you don't unlock the achievements)
I've been playing for hours since it was released and I've managed to complete 1 level and that was a 5 hour grind.
It doesn't help that it's set up to cheat, the AI starting with levelled up units.
I've logged over 1600 hours on WTFO and this is the first time I've turned it off in disgust over an official release. I really regret buying the expansion now.
Customer support service by UserEcho