And I did. DRu35's are recommended means of getting rid of the guards arounf the landing point. Then dump the empty launchers, ignore the first gate and get around the building to enter via a second entrance - this will let you avoid some of the fights.
Also, it's possible to pass the mission with two (not counting the DRu35's) weapons per DOLL. This is probably the fastest way to do it, but cuts it close with the ammo near the end. I'll have to try it again later, with maxed out AP quota. >
I've figured out how to exploit the first mission for maximum XP - it's ridiculously simple, and involves going against the specified mission objectives (not destroying the dam). LOL You end up fighting the enemy armored force you were supposed to cut off.
And since the goal remains incomplete, you can run around building up AP and then finish the mission whenever you want.
Lots of easy power-building there.