Basically are game last night turned in to a re-run of black hawk down. Trying to do the helping hands task, realise we need the restaurant key, which neither of us have, proceed to enter town from LZ1 and start to engage on a key hunt. By proceed to enter town I mean engage four AI at the first house, I get dropped and have to chopper ride back in, my mate kills another 6 at the same place while looking after my body. Get into to town, kill another 10-15 or so and no key, both get dropped at the marketplace, chopper ride to LZ2 to get our gear. Move south in the town while resuming operation "where's the bloody key?" to no avail, both of us have broken gear and small stones for ammo supply, move to extract north, AI in fields, bushes, houses. Manage to skirt round everything and get out. So completely failed the mission, still no key but easily some of the most fun and tense gameplay I've had for ages.