Just Cause 2

A Sabotage is done by destroying the Panauan Infrastructure. If you come across a structure with a white, five armed star on it you can blow it up to execute a sabotage! Some of these like Pipelines or Fuel Shafts cannot be simply blown to pieces.

Pipelines feature a small terminal which you can locate easily by looking out for some stairs leading up to the pipeline. Fuel Shafts extend into the ground any you need to climb down the enemy ridden shaft. The terminal is on the bottom most floor. Be sure to look for a quick way out before staring the detonation countdown.

You can check your progress in the statistics menu. The following all count towards the achievement:

- Baby Panay Statues


- Communication Stations


- (Bio) Fuel Shafts


- Propaganda Trailers


- Pipelines


- Satellite Dishes


- Gas Stations


- Gas Holders


- Water Towers


- Radars


- Wind Turbines


- Generators


- Transformers


- Broadcast Towers


- Communication (Radio) Masts


- SAMs


- Offshore Rigs


- (Industrial) Factory Chimneys


- Cranes


- (Fuel) Silos


- Fuel Depots


- Mobile Radars


List of sources from the excellent Just Cause 2 Wiki:
Baby Panay Statue | (Bio) Fuel Shafts | Fuel Depots | (Fuel) Silos | Wind Turbines | Broadcast Tower | Radars | Propaganda Trailers | Offshore Rigs | Pipelines | Communication (Radio) Masts | Communication Stations | Cranes | Satellite Dishes | Gas Holders | Gas Stations | Water Towers | Generators | Transformers | SAMs | Industrial (Factory) Chimneys | Mobile Radars

Review 24 September 2014: Fixed an image.

I've found that hijacking a military helicopter or buying the one from your blackmarket dealer and then going and firing at Military Bases, Military Harbors, and Oil Rigs makes your sabotages go up extremely fast. But make sure to take out SAM sites first so they dont shoot you down.

Pretty simple once you unlock the Helicopter from the Black Market. Once you have it unlocked, you can use it but also try to upgrade it all the way every now and then whenever you get vehicle points. Press Down on the D-Pad then Y to access the Black Market then go to vehicles and the Helicopter you want to chose is on the bottom. Now press Back to go to your map. Look for yellow dots (Areas that haven't been discovered) or the Military Base Logo and head to them with your helicopter. Most Military Bases will be guarded with some SAM turrets so take those out first. The best way I have found would be to circle around the base and don't stop moving until they are destroyed, there are usually more than once so look out. Once they fire at you and you dodge their shot, stop then take aim and shoot. Hold LB+RB that way your Machine Gun and Rockets are both firing at the same time to cause the most damage possible. Don't worry too much about your heat. Take out the choppers if they start bothering you, if they shoot you down, just grapple to their helicopter and Hijack it. There will sometimes be a passenger so make sure you have ammo in your secondary weapon (Right on the D-Pad). Shoot the passenger then press Y to Hijack, you will have to mash a couple buttons each time but it's easy don't worry too much about it. Now with all that said, aim for anything you can destroy. Anything with red basically, look at the pictures for Epsilon Theta's guide for better information. I hope this helps anyone who was brave enough to read all the way through my solution. :D Good luck and if there is anything I can do to help you out or make this solution better please let me know through the comments, through message, or a message on Xbox Live. Have fun

UPDATE #1: You can check your progress in the statistics menu. Press the Back button then press Right Trigger. Then go down to Statistics and then down again to Sabotages. It shows your progress for everything :)

UPDATE #2: Offshore Rigs usually a loaded with things you can destroy. You can probably get about 15-20 on each one and they're easily to find as they are the only yellow dots in the water. Fly around those a couple times and make sure you get everything, even the Fuel Depots underneath. You don't need to worry about SAM turrets either as there are none. Military Harbors are the 2nd best for getting a lot of sabotages. Just fly around destroying everything, there will be more you can get from the Harbors but it is a lot quicker to do the Offshore Rigs first.

"Small corrections: There are SAM sites on offshore rigs.
If you progress the story even a little bit, you'll get a faction base or two which have random helicopters in them. If it's a military base, you will often see armed copters on the pads. This is preferable to dumping cash on Black Market transportation."