Mass Effect 2 Walkthrough - Jack's Loyalty Mission
Jack's loyalty mission (Jack: Subject Zero) will be a little romp back to her childhood in the Cerebus Facility. You'll get to do a little digging into her background, get some element zero, and gain Jack's loyalty through a surprisingly small amount of fighting.
Jack's mission is pretty quick and simple. It doesn't really matter who comes with you. Jack can honestly handle most of this herself. Just pick whoever you want.
Land on Pragia and enter the facility. You can hack the terminal for some more money. Then just head down into the facility. There isn't much here. Just get into the large area and run into the four varren. You can probably just melee these guys to death if you want.
Keep moving. You can stop at the arena and examine the blood spot if you want to find out about Jack's past. You can bypass the door by the dead varren to get some element zero if you want. Just keep going down the stairs and into the next room. Some varren and a few blood pack mercenaries will attack. Just take cover and take a few down. About halfway through the fight, the windows on the right and left will burst and mercenaries will take up flanking positions on them. Turn and pick off any that are behind you so that you don't have to move to a new cover position.
Check the area for a PDA on the right side and then get to the new area. You can hack the research terminal here for some more research on biotic damage. Also inspect the security logs to get more information on Jack's breakout. When you're ready, move into the next room and run into the rest of the mercenaries.
Kureck and Aresh
You can say a few things to the mercenaries. You'll end up fighting them regardless. The vorcha in front should die fast. The problem is that the krogan know to hang back and hide when they get hit. This means it's a pain to actually kill one. Just try to hit one or two with a series of abilities to bring them down. Once Kureck loses a few krogan, he'll tell the rest to just charge. Now that they're out in the open, gun them down. Kureck will rush after that, so take him out too.
Just one door left, so go in and find Aresh in Jack's old room. He apparently wants to rebuild the whole thing. Naturally this is bad. Jack's going to blow up the base regardless, so that isn't the problem. You just have to decide what you want to do with Aresh. You'll need to do a paragon interrupt and a paragon speech option to convince Jack that killing Aresh will just finish the corruption that the place had on her. Renegade can convince her that killing Aresh will clear her mind.
Once you've made your choice, you can stay behind to look at Jack's room. You can look at the bed, the desk, and the blood stain in the wall to learn about her escape. Then you just have to hold "F" to escape and watch the base explode.
Mass Effect 2 Walkthrough - Loyalty Missions - Part 1
Gaining your squad's loyalty is crucial to the final mission. Each member's loyalty can be gained through a corresponding mission. Once they're loyal, you'll have access to a new outfit for them and you'll unlock their fairly nice fourth ability.
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