Mass Effect 2: Jack: Subject Zero - walkthrough Mass Effect 2 guide, walkthrough

Last update: 02 June 2021

IMPORTANT! I would strongly recommend starting this mission later in the game. To be more specific, you should focus on fully developing your character's paragon bar or renegade bar, because otherwise you will be risking losing Jack's or Miranda's trust!

Description: This quest should appear in your journal after completing several missions following your trip to the Horizon and naturally you must pay Jack a visit to learn more about her problem. Jack can be found in lower corridors on the fourth deck of the Normandy and during the conversation you should agree to provide help in destroying a former Cerberus base. This mission can be continued by opening the galaxy map and plotting a course for the Nubian Expanse. You'll end up in the Dakka system and you'll have to confirm that you want to land on the surface of a planet named Pragia.

You may begin exploring the [Pragia - Teltin facility] map. You should know that there aren't any enemies in the area, so you won't have to look for cover and instead you may immediately proceed to a lower level. You'll be going through small rooms and don't forget to be on a look out for a computer terminal (second screenshot) which holds 3000 credits.

You'll soon have to open a door and use the stairs to get to a lower level. You should make a stop here and listen to a recording left by the security. Proceed to the next section. As soon as you've entered a new room locate a crate (second screenshot). Breaking the lock (mini-game) will result in earning 3000 credits.

Be careful here, because you're soon going to be attacked by a group of varrens. Don't forget that it's important to prevent the beasts from moving closer. After you've won make sure to examine a blood stain found on the floor (second screenshot). Doing this will initiate a short conversation with Jack. Proceed to the next area of the facility.

The next corridor contains a medical station, as well as a security console (first screenshot). Interacting with the console will result in listening to a new recording and talking to Jack again. Proceed through the next door and after you've used the stairs break into the left room (second screenshot). There's a container inside and it holds 500 units of element zero.

The first big battle of this mission will take place in the next room, so you should save your game. Start off by ordering your teammates to take cover behind the nearest obstacle (first screenshot) and then attack your enemies. Watch out for soldiers equipped with armor and for those using flamethrowers (they can't get too close!).

The next stage of this battle will feature new enemies firing at you from windows found to your left. You'll have to be ready for them and relocate your team to a new cover so your followers won't be exposed to their gunfire. Keep fighting until it's safe here and then explore a small corridor found to the right (second screenshot). Interact with a PDA to collect 3000 credits.

You won't be allowed to continue this quest until you break a lock on a nearby gate (first screenshot) and this means having to solve a well-known mini-game. Head forward and use the stairs to get down to a lower level. Take cover immediately after entering a new corridor and eliminate two enemy soldiers seen in the distance, preventing them from making a surprise attack.

You may proceed to a lower floor. Watch out, because a group of varrens will be hiding in one of the cells and you'll have to eliminate the beasts without suffering any major injuries. Check all the cells, because one of them (second screenshot) will contain a circuit board (3000 credits). Continue your mission. The next area contains only one interactive object and that is a med kit.

Head on to the next room and then proceed to your right (first screenshot). You can perform four actions here - collect power cells, interact with two computer stations (listen to recordings also means having new conversations with Jack) and hacking into a terminal (second screenshot) to acquire a new plan for a research project. SAVE your game before moving on.

Get ready for the main boss battle after a very short introduction. This time you'll be going against Kureck and you should start by ordering your followers to take cover. Eliminate some of the closest targets and then choose one of two passageways leading to boss's location.

You shouldn't have any problems getting closer to the boss and it would be a good idea to use a heavy weapon to kill him. Watch out for standard enemy units during the battle, preventing them from making surprise attacks. After you've defeated Kureck you should look around - hacking into one of the containers (second screenshot) will result in receiving 3000 credits.

Choose the only available door and after going through a short corridor you'll find yourself standing in the same room with Aresh. Listen to his plans and then make your decision on how you want to end this quest. Two easiest solutions are to use special dialogue options reserved for an idealist or a renegade. If this is not possible, you'll have to choose a standard dialogue option. Notice that you'll also have a chance to stop Jack from killing Aresh by choosing a special paragon interrupt (second screenshot).

It doesn't really matter how you solved the situation with Aresh, because now you'll have a chance to look around. You must examine three objects found in this room - a mirror, a bed and a table. Return to the previous corridor where you'll also have to take a look at a blood stain found on a wall (second screenshot).

After you've returned to the Normandy you'll witness a confrontation between Jack and Miranda. If you've sufficiently developed a paragon bar or a renegade bar you will be allowed to choose a special dialogue option and doing this will resolve the situation. Otherwise you'll have to choose between losing Jack's or Miranda's loyalty.