Mass Effect 2

Talk to Legion in between missions. He is on the third level of the ship, in the AI Core, through the Medical Lab on the third level of the Normandy. Loyalty missions will not be available until after the mission on Horizon is completed.

After activating Legion, speak with it again to unlock Legion’s loyalty mission. This mission is a trip through a geth station. Most of the geth will be offline until you shoot one of the stasis pods or step on one of the green lines that are on the floor. You’ll be fighting the standard geth that you should be used to now. The final room is where Legion will begin hacking the geth core. There will be three waves of geth here and you will have to defend the upper platform from the oncoming geth. After the third wave, you have to decide whether to destroy the station or rewrite the virus to make those geth disloyal to the Reapers. Whichever you decide, you will have three minutes to make it out of the station, but you will have to fight some geth on the way out. Remember, there is a ticking clock.

Once Tali’s and Legion’s loyalty missions are complete, then there is a chance that they will get into a fight and you’ll have to choose to side with one of them. The longer that you wait to complete both of their loyalty missions, the higher your paragon/renegade rating will be to either diffuse the situation, or get one of them back loyal again. With a high enough paragon/renegade rating, you can end the fight and keep them both loyal. Use either the blue or red dialogue option on the left side.

(Missable) Talk to Legion in between missions. He is on the third level of the ship, in the AI Core, through the Medical Lab on the third level of the Normandy. Loyalty missions will not be available until after the mission on Horizon is completed.

After activating Legion, speak with it again to unlock Legion’s loyalty mission. This mission is a trip through a geth station. Most of the geth will be offline until you shoot one of the stasis pods or step on one of the green lines that are on the floor. You’ll be fighting the standard geth that you should be used to now. The final room is where Legion will begin hacking the geth core. There will be three waves of geth here and you will have to defend the upper platform from the oncoming geth. After the third wave, you have to decide whether to destroy the station or rewrite the virus to make those geth disloyal to the Reapers. Whichever you decide, you will have three minutes to make it out of the station, but you will have to fight some geth on the way out. Remember, there is a ticking clock.

Once Tali’s and Legion’s loyalty missions are complete, then there is a chance that they will get into a fight and you’ll have to choose to side with one of them. The longer that you wait to complete both of their loyalty missions, the higher your paragon/renegade rating will be to either diffuse the situation, or get one of them back loyal again. With a high enough paragon/renegade rating, you can end the fight and keep them both loyal. Use either the blue or red dialogue option on the left side.