2.5 dev 12/13 download - I've had a mission in my campaign where I was going to the lake ice map to go after a downed supply ship & it's unplayable due to human starting position has no cover nor a dropship on map & there's so many aliens & they're all coming after you, no hiding, just a straight Mike Tyson fight. I've tried smoke grenades but the supply of aliens make those moot to hide behind or create shotting alleys. There's at least a dozen or more aliens at my last count vs 8 humans w/ no cover. 2-3 always come over the hill on turn 3, 2 come from the house area & the rest come from the building right at you but alein numbers make any tactics useless. This map was playable in past versions but just way too many aliens on map make it unplayable for an early-mid game mission.