You Got Time to Duck Objective Four
Far Cry 3 Blood Dragon Walkthrough You Got Time to Duck?
Objective Four : Defend Spider, Kill all enemiesMove ahead till you see a ramp above your head and climb it - it's marked on your mini-map. Anyway, walk to the left of the ramp and ahead and you will see a lot of enemies ahead, before you start shooting them, consider stealth killing as many as possible.
move to a good location on top of the ramp and use your dice to distract and kill as many as you can. You can always restart from the checkpoint if you think you can do better.
After killing all the soldiers here, you need to find the mainframe - which is obviously shown on the mini-map along with containers having some stuff. Just go to the containers and pilfer them.