Mass Effect 2: Dossier: The Convict - walkthrough Mass Effect 2 guide, walkthrough

Last update: 02 June 2021

Received from: The Illusive Man [Lazarus research station]

Description: This quest will automatically appear in your journal after completing the prologue and getting on board of the new Normandy. I wouldn't recommend starting it right away, because it'll be easier to find the Professor and the Archangel first. Once you feel you're ready for the mission use a mass relay to travel to the Hourglass Nebula. You should end up in the Osun system and you must click on the Prison ship Purgatory. Confirm that you want to dock and wait to be transported to [Prison ship Purgatory] map. Head forward here to talk to a Prison guard.

After you've declined to hand over your weapons you'll have a chance to talk to Warden Kuril. He'll inform you that in order to retrieve Subject Zero you'll have to go to the outprocessing area. Start off by moving forward. You should be able to meet two guards and a prisoner just around the corner and it would be a good idea to find out what's happening by talking to the guard standing outside the cell. You can convince the guards to stop torturing the prisoner (special paragon/renegade dialogue options), avoid commenting what you see or commend this action.

The next cell is a home to prisoner number 780. Talking to him is optional and won't affect the rest of this mission. Keep going straight, avoiding one of the side corridors along the way. It shouldn't take you long to get to the outproccesing area (second screenshot). Save your game here before proceeding to a new door seen on the opposite end of the room.

An attempt of opening the door will trigger a new cut-scene during which you'll find out about warden's betrayal. Quickly order your teammates to take cover behind nearest objects, because enemy units will begin storming through the exact same door you've used not long ago. Aside from soldiers of the Blue Suns you must also watch out for FENRIS mechs. Consider using Overload on the mechs and other special powers on enemies equipped with armor and shields.

You must now return to the side corridor mentioned above (the one you've ignored while trying to reach the outprocessing area). Don't be surprised when you encounter new soldiers and mechs along the way - thankfully eliminating them shouldn't be a big problem. Proceed towards an unexplored passageway (second screenshot) which will lead you to the cryo-stasis control room. Kill a poorly equipped technician here.

Take your time exploring the room. There's a medical station here and a container with 500 units of element zero. Finish off by interacting with security controls (second screenshot) which will allow you to free Jack (aka Subject Zero). Watch a cool cut-scene and then proceed towards a newly unlocked door (it's to your left).

Head down to a lower level and open a door located to your right to enter a room with a lot of destroyed mechs. Explore the mechs carefully, because you'll be allowed to scan one of the machines (first screenshot). Doing this will add a new plan for a research project to your database. You may now go through a hole in the left wall.

Continue heading through this dark corridor (thankfully it won't be guarded by anyone). Make sure to pick up power cells along the way and to examine a guard's body to take 1500 credits. Save your game and then enter a large warehouse area. Place your men on the balcony and behind the cover (second screenshot), allowing them to start firing at enemy troops.

This section of the prison ship will be guarded by several soldiers, but you should more worried about a new encounter with an YMIR mech. Don't forget that the mech is protected by a powerful shield and armor so you'll have to use your best powers and weapons (preferably heavy guns) to destroy it. Keep fighting until it's safe and then proceed to the opposite end of the warehouse. Be on a look out for a dead soldier along the way - scanning his body will allow you to acquire a new plan for a research project.

Make sure to explore the left balcony before leaving this area for good. A PDA can be found next to one of dead soldiers and hacking it will reward you with 4500 credits. You may finally proceed towards the only available passageway (save your game along the way!). Look around when you find yourself in a narrow passageway - you can collect power cells, use a medical station and take 4500 credits from a dead guard.

Be careful, because one of the guards will be hiding just around the corner. Kill him and only then allow your team to follow you to a new area. General rules of the battle won't change here - you will have to use cover often and eliminate enemy soldiers mostly from a larger distance. Notice explosive canisters near some of the enemy units (second screenshot). Blowing them up will make winning this battle much easier.

A new mech will be waiting for you at the other end of the hall. Don't forget to choose your cover wisely and to rely mostly on a heavy weapon to destroy the machine. Keep shooting at other enemy units until they're all gone. Take your time to collect ammunition and to take 1500 credits from a dead guard (second screenshot).

You may proceed towards the only available passageway. Make sure to take power cells for your heavy guns, as well as to interact with a medical station. There's a safe nearby and if you can solve the mini-game you'll earn 3000 credits. SAVE your current progress before entering the last room of the prison ship, because you're about to take part in a boss battle.

As soon as the cut-scene has ended order your colleagues to take cover behind large, solid objects. Ignore Warden Kuril for the time being, because he will remain hidden behind a force field and he won't be able to perform any attacks. Instead of hunting him down focus on eliminating nearby soldiers. It's highly recommended that you change positions from time to time, preventing them from performing flanking attacks.

Thankfully the guards won't continue respawning endlessly, so if you're just patient enough you will be able to kill all of them. Once Warden is the only one standing order your subordinates to take positions on both paths leading to Kuril's position (they need to use cover!). You can now start using one of your weapons to destroy three generators (second screenshot). It'll only take a few seconds to destroy each generator, so you won't lose a lot of time here.

Wait for the force field surrounding the warden to disappear before you start attacking him. You should treat warden as any other powerful opponent so you must begin by disabling his shields and then destroy his armor. Make sure to keep using cover, because Kuril has a powerful weapon at his disposal. Killing warden will result in the game playing two cut-scenes. First cut-scene will show your first encounter with Jack. You can agree to allow her access to Cerberus files or you can lie about it. Once you're on board of the Normandy you can agree again (don't worry about any Cerberus repercussions) or you can convince her to delay this problem in time.