Grissom

Guide to the Grissom system in Mass Effect: Legendary Edition (ME1), including the Solcrum moon, UNC: Geth Incursions, and Tali and the Geth assignment.

Alright, let's talk about the Grissom system in Mass Effect: Legendary Edition. You'll unlock this system after you've cleared out the other four systems in the Armstrong Nebula. It's tied into a pretty involved assignment called UNC: Geth Incursions, which you'll actually start getting transmissions about when you first enter the Armstrong Nebula. You'll be dealing with this one across multiple systems, but Grissom is where a key part of it takes place.

Once you're in the Grissom system, you can land on the moon called Solcrum. Be warned, it's an inhospitable place with a Level 1 Heat Hazard, so keep an eye on your suit's temperature. Your main objective on Solcrum is a bunker located just east-of-center on the map. When you approach it, you'll have to deal with a couple of tough enemies: two Geth Colossi and three Rocket Troopers. Take them down, and then head inside the bunker to clear out the rest of the geth forces there. It's a bit of a dramatic finish to the geth invasion force!

After you've dealt with the geth, make sure you thoroughly loot the bunker. You're looking for a “Geth Terminal” (it's marked as [Easy] to hack). Downloading the data from this terminal will kick off the assignment Tali and the Geth, assuming you haven't already started it by talking to Tali on the Normandy. Don't worry too much about when you started it, though – to finish the assignment, you just need to speak with Tali again back on your ship.

Points of Interest in the Grissom System:

• Solcrum: This is where you'll find the bunker for the Geth Incursions assignment, plus a Geth Terminal for Tali's assignment. You can also find loot like Light Metal and Rare Element deposits here, as well as Matriarch’s Writings and a Crashed Probe.
• Rocky Asteroid: You can find Rare Element deposits here.