- Garrus: Find Dr. Saleon
- Tali and the Geth/Tali's Pilgrimage
- Wrex: Family Armor
Garrus: Find Dr. Saleon
Speak to Garrus in the Normandy's Engineering section after completing the Therum, Feros and Noveria storyline missions. This assignment is only available if you have previously spoken to Garrus about his history with C-Sec. Opportunities to learn more about Garrus' history arise with the completion of a storyline mission.
Once you have met the above prerequisites, speak to Garrus on the Normandy. Garrus tells you of his encounter with a mad geneticist named Dr. Saleon during his time as a C-Sec officer. Dr. Saleon conducted a number of grotesque experiments and operations on subjects to grow organs that were then sold on the black market. Dr. Saleon managed to escape from justice and is at large to this day. Garrus, however, holds the coordinates to a ship operated by one Dr. Heart, whom he believes to actually be Dr.Saleon. Ask him for the coordinates to add this assignment to your Journal. Garrus asks to be there when you go to take Saleon down.
Objective: Head to Coordinates
Travel to the Herschel system of the Kepler Verge and board the MSV Fedele. Be sure to choose Garrus as one of the two squad members to accompany you, as he is the only one who will know for sure whether this Dr. Heart is truly Dr. Saleon.
Objective: Find Dr. Saleon
Enter the ship's main hold. The area is full of Dr. Saleon's test subjects, which are essentially Thorian creepers. There are explosive containment cells scattered throughout the area, so either detonate them from a safe distance using a gun or stand near the area's entrance and let the test subjects come to you. The test subjects' vomit or your squad's own tech and biotic abilities may set off a containment cores near you, which can then cause severe damage. Use a melee strike to knock a test subject down if it gets too close to you, as getting sprayed by its vomit induces prolonged toxic damage.
Make your way to the door at the opposite end of the ship's hold and enter the hallway. Enter the first room on your right to find Dr. Heart. Garrus confirms that this salarian is Dr. Saleon. Choose 'Finish him' to let Garrus get his kill or 'Back down, Garrus' to attempt an arrest. Saleon doesn't take the prospect of an arrest well, and instead chooses to go down fighting. Whichever option you choose, the assignment ends once Dr. Saleon is dead.
Tali and the Geth/Tali's Pilgrimage
This assignment is available after completing the 'UNC: Geth Incursions' assignment. Decrypt the geth terminal in the southeastern room on the first floor of the geth bunker on Solcrum and download the data to add the assignment to your Journal.
Objective: Speak to Tali
Speak to Tali in the Normandy's Engineering section. Tali asks you for a copy of the data that was retrieved on Solcrum so she can end her pilgrimage. With the data in their possession, the quarians may be able to discover the geths' weakness. Even though handing over a copy of the data means the end of Tali's pilgrimage, she promises to remain with the Normandy crew until Saren is defeated. Give her the data to receive Paragon points or refuse to hand it over to receive Renegade points.
Wrex: Family Armor
This assignment becomes available once you have completed Therum, Feros, Noveria, and have spoken to Wrex in the Engineering section of the Normandy about his past several times. Opportunities to learn more about Wrex's history arise with the completion of a storyline mission.
Once you have met the above prerequisites, speak to Wrex aboard the Normandy, select 'Investigate' and then 'Family.' Wrex tells you that he is looking for his family's ceremonial armor, which was taken from him by the turians after the Krogan Rebellion. Offer to help and he tells you that a turian profiteer named Tonn Actus currently has the korgan armor stashed in a base somewhere in the Argos Rho cluster.
Objective: Find Wrex's Armor
Travel to the Phoenix system in the Argos Rho cluster and land on Tuntau. Be sure to Make sure Shepard or another ally has talent points invested in the Decryption talent. The krogan armor is being held in a base a short ways south of the Mako's drop point. Scale the mountain south of the drop point to reach the base. There are a few pirates stationed in front of the structure's entrance, though the Mako's cannon can make short work of them. When the perimeter is clear, exit the Mako and step inside. Upon entering, if Wrex is with you, he confirms that this is indeed the place where his armor is being held.
There are plenty of pirates in this facility, so get behind cover or lure them back to the entrance room and take them out one by one. Once all of the pirates in the base have been dealt with, head up the stairs in the northeastern corner of the main room and proceed through the door at the end of the walkway. The wall safe in this room contains Wrex's family armor. Decrypt the safe to receive the armor and some other items. Open the other item chests in the room and then return to the Normandy once you're ready to leave Tuntau.