Find intel data
You can complete this one, while playing the mission for the first time, but you need to do that before you fulton the containers to the Mother Base. There are two documents that you need to find. The first one is in the camp in the North-Eastern part of the jungle. It is a big tent whose location has been shown in the above screenshot.
To find the other document, you need to go to the mansion in the Eastern part of the map. It is being guarded by a dozen-or-so opponents and if you do not want to be spotted, you need to keep appropriate precautions (sneaking, taking the opponents' whereabouts with binoculars, or using D-Dog). It is best to enter the mansion through its back door and it is being guarded by two opponents, at least, and you will have to deal with them first. The data is in a room on the second floor of the mansion and it has been shown in the above screenshot.
Obtaining the data allows you to identify the commander, although it is also possible that you will have eliminated him already, while exploring the estate area.
Extract the commander of the Zero Risk Security team
Abducting the leader is directly connected with the secondary objective mentioned above. You can find him thanks to the data that you have obtained, or on your own. The commander is wandering all around the estate, so you should not kill anybody, while exploring the estate, or you will fail this objective. You complete the mission after you fulton the commander (if you ran into him inside the mansion, you should first carry him out).
Find rough diamonds
It is best to complete this objective when you are replaying this mission. This is so, because the diamonds are hidden close to outpost 8 and you will not have to cross the entire map to get them, if you pick the Northern landing site. Precisely, explore the area to the South-West of outpost 8. Reach the part of the map shown in the above screenshot, where there are ravens flying. Here, locate the Rough Diamond which is worth 100000 GMP.