Geth in the Tunnels

Once you've dealt with the initial Geth ambush around Zhu's Hope and spoken with Fai Dan, he'll tell you about a Geth transmitter hidden in the tunnels. Accept the assignment to find it.

Make your way north out of Zhu's Hope. You'll see an elevator leading to the Prothean Skyway, but ignore that for now. Keep going to the end of the path and take the stairs down to reach the tunnels.

Follow the tunnel; it's pretty linear until you reach an intersection. You'll have options to go west (Collapsed Highway Section), north, or east. Head east.

As you open the door to proceed east, you'll encounter some Geth. After dealing with them, you'll cross a bridge.

On the other side of the bridge, you'll face a group of three Krogans. These guys can be dangerous up close, especially on higher difficulties. It's best to back up and use your Biotics to disable them. If you have Toxic rounds, use those to prevent them from regenerating health. Keep your distance and chip away at them.

Once the area is clear, you'll find the Geth transmitter. Shoot it until it's destroyed.

With the transmitter down, make your way back to Fai Dan at Zhu's Hope to complete the assignment.