Gave this one a go last night, we didn't sneak into to steal the lav, so that objective didn't flip as completed or failed. The first battle around where the lav was stored was great, we had lots of exciting moments and hardly died throughout the battle there.
Moving on to the quarry, this was also exciting but i think your hummers were getting hung up on thier routes. You could use some more hiddent guys in this area and possibly beef up the foot soldiers. We never did find the barrel with the chemical in it, and gave up shortly thereafter.