Find a haoma plant
Finding a rare haoma plant is the easiest at the beginning of the mission however you may also take care of it in the end. Explore the desert southeast of the Da Shago Kallai village. You will find the plant in the place marked on the screenshot above.
Secure the common metal
Finding the common metal will be the easiest right before the end of the mission. Get to the bridge in the western part of the Da Shago Kallai village. This area will be surrounded by at least two enemies which you may either neutralize or ignore. You will find the Common Metal box under the bridge, in the place shown on the screenshot above.