I did it with the fulton trick: fulton the truck at the airport, then sprint like crazy to a cargo container, climb it, fulton it and fulton myself out with it.

If you‘re willing to give it another shot and have problems finding the „transport specialist“ hostage in mission 10, I‘ve read that there‘s a guard at the oil facility in mission 13 who has the skill as well. You can just sprint through the savanna to the facility and ignore all enemy bases, look for the guard, whack him, fulton him, wait a few seconds for good meassure, and then „Abort Mission (Return to ACC)“ and the guard should be in the brig regardless. That‘s how you also do the mission tasks without seeing the mission through to the end every single time. Or just finish the mission proper.

Later you can fight the Skulls with a rocket launcher with a few upgrades and whatnot, but it‘s not very fun… Maybe you can do it now already and drive the truck out of the hotzone. I’d rather go get the specialist to upgrade fulton though. You absolutely require the upgraded fulton later on anyway.

Anything „Skulls“ was my least favorite part of the game, the mech fight wasn‘t great either. If stealth is not an option, my fun nosedives.