God that timed mission. I also cleared it last round, when I realized I wouldn't make it unless I just ignored the surviving enemies, and sprinted my nearest mech, my heavy, right up towards the objective. Then the rest of my lance proceeded to perform a series of flawless shots, blowing away the remaining resistance, with two rounds to go.
Then the game moved over to free move since I'd killed everything, and ticked down one round without letting me move my heavy again. Ended up making a save just in case I had to scum missed shots because man, that would have been bullsmeg.