Stronghold Takeovers

There are three strongholds for each faction for a total of 9 (for those who
are mathematically challenged).

Anyway, after completing Agency mission 2, you will have a choice of which 
faction to start with. More takeover will be unlocked once you cause enough
chaos.

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Ular Boys
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Stonghold 1 - Power Surge
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Mission Briefing:
The Ular Boys want to expand their operations in Panau and are looking for
someone to help them take over a nuclear power plant in the East Tanah Raya
region. Start working for the Ular Boys by contacting their leader, Sri 
Irawan.

Reward:
Chaos - +7500
Money - +17500
Weapon Parts - +2
Vehicle Parts - +2

So the Ular Boys are looking to take over a power plant. How exciting. The 
goal of Stronghold missions is to protect a technician so he can hack 
something in the heart of the stronghold. Once you successfully complete that,
the base will be your and the region will fill with missions for the Ular 
Boys.

The mission starts pitting you and some Ular teammates against some normal
guards. However, the gate is blocking the way and the mission can't be 
completed, the game is over. Actually, you have the grappling hook to easily
go over the wall. (Couldn't they climb over it by boosting each other anyway?)
So once you hop over, go to the control panel and hack it to lower the gate.

Some guards will pull up in their Humvee just asking for death. Once the 
technician gets inside, he will inform you of a rocket launcher enemy in a
nearby tower. Go take care of him will your allies deal with any ground 
troops there may or may not be.

Right after you kill the rocket launcher guy, there will be some enemies 
behind some sand bags shooting their very ineffective sawed-off shotguns
at you. Kill  them in any way you please and continue through the power plant.

The technician will inform you of some enemies above you on the catwalk. The
game suggests to pull them down with your grappling hook. This works well as
does shooting them or letting your allies deal with them.

The next enemy is a lonely sniper sitting on the roof behind some sand bags.
Go ahead and pull him off of the roof to show him how gravity can be a bitch.

At this point, you will be near the end. On the other side of a stream of
water, there will be an encampment with a minigun and a few guards. Kill
the dude on the minigun first and then deal with the guards. The technician
can now hack into the terminal to do whatever it is he does.

During this time, some enemies will come and try to kill the technician.
Use that lovely minigun and just mow them down. Eventually the stronghold
commander will roll in on his armored car shooting his pathetic minigun at
you. Just shoot him out of the turret and the base is yours!