The tactics I've used so far have gotten me ahead in the game, but my casualties run high in building assaults. Most of it is just pure frustration in getting my squads to assault a room properly. Not sure if it's me or a glitch in the game. An example would be sending a assault squad into room with enemy soldiers pinned down from suppressive fire, only to watch them move down the floor below them and wasting time. Sometimes they don't even enter the room, but just stand there holding there weapons. Another problem I've seen is when moving a squad from the second floor to another room on the third floor, and watching them go way out of there way to get there, even climbing up the roof.
I'm curios to here if anybody else has had these problems.