Two weeks in a row now my guild has tried this and has hit a bug after the first boss where you go through the escort event of the spiders and aboms. Right as you hit the end where all the enemies are supposed to aggro onto the turret all our guns and the suit drops, and the entire party gets one shot. The mobs then attack the turret. Trying again we reach a point just before the turret and once again all the special gear for the encounter drops and the entire party is one shot again. Even if a person or two manages to make it through okay nothing unlocks and the rest of the party cannot get through to them. Not sure which parts of this are intended but it is certainly true that if you fail it once you cannot succeed the path anymore.