You will begin the mission atop the grind lift again and after a brief introduction, an emergence hole will appear and locust will start attacking from the front. Get onto the turret and star blasting away at all the enemies as they make their way forward. After a minute or so, a locust mortar crew will appear and start hitting the rig with mortars. At this point it is likely that the turret on the front of Betsy will be destroyed. Luckily there are mortars on the deck for you to pick up. Destroy the mortar crew and continue plugging away at the locust swarm.
Soon after, a group of boomers will join the party; take them out using the mortars if you still have some. Next up are a pair of reavers, destroy them, once again the mortars are the best cure for these things. Once they are dead you will have completed Act 1.
