Finale - Grand Theft Auto 4: The Lost and Damned
Complete the “Was It Worth It?” mission in Ray’s mission line, and eventually Stubbs will give you a call. Meet Stubbs at The Lost clubhouse to get started.
Travel to the prison in Acter Industrial Park and hit the marker outside to trigger a cutscene. After the cutscene, you’ll have free-reign over Terry’s gun van. Everything is free, so grab whatever you need. Take a fully-load Carbine Rifle, Assault Shotgun, RPG Launcher, SMG, Sniper Rifle, Pipe Bombs, and anything else you can carry. Be sure to grab some Body Armor as well.
Hit the prison gate with an RPG, and then switch to your Carbine Rifle. You’ll first have to fight your way to the prison yard. The guards in the prison are heavily armed, and there are a lot of them. The Carbine Rifle is incredibly accurate and can make short work of them, so hang back and start picking off the guards visible beyond the gate. When the first batch of guards has been dealt with, follow Terry and Clay to the next area.
Another batch of guards will run around the corner, so hang back and pick them off. Grab the health pack on the stack of bricks if necessary, and then continue moving forward. Be sure to pick up any ammo along the way. There’s a sniper on the building around the corner, so take him out first. Clear the next group of guards, and then press on to the prison yard.
A couple of helicopters full of N.O.O.S.E. agents enter the prison yard. The cover you’re put behind after the cutscene isn’t the best, especially since there are a number of enemies up in the central tower and along the connected walkways. If you have plenty of health, it might help to sprint away from the commotion, so you can pick off the enemies with the Carbine or Sniper Rifle from afar. Don’t go too far, otherwise you’ll fail the mission for abandoning Clay and Terry. You’ll be taking fire out in the open, so quickly start picking off the enemies on the ground and walkway closest to you.
After dealing with the enemies nearest to you, switch to your Sniper Rifle and start killing the guards further out. When the prison yard is nearly clear, a red marker denoting Billy’s location will appear on your radar. Sprint over to Billy and switch to your pistol. Lock-on to Billy and press RT to initiate the execution cutscene.
Once the deed has been done, sprint over to Johnny’s Hexer and hop on. Follow Terry and Clay out of the prison yard and through the front gate. Lead the gang back to The Lost clubhouse to complete the mission and trigger the endgame cutscene.