If I play this one, in my head it will be the continuation of my first-ever attempt to play Enemy Unknown (also my first-ever attempt to play any small-unit tactics game!) Normal difficulty, IIRC, and things were going so well until the first terror mission, at which point the Chrysalids executed a textbook TPK on the only squad I'd bothered to train, leaving me with nothing but rookies. Faced with this, the base commander just ... gave up, and ignored all further alien activity for two months, which is how long it took the Council to pull the funding.

(Out of character, I figured there was no way I could win at that point so I might as well hit fast-forward and see the bad ending.)