Just Cause 2
50 Achievements
1,000
60-80h
A Trusted Ally
Complete 49 faction missions.
20
How to unlock the A Trusted Ally achievement in Just Cause 2 - Definitive Guide
However, I encountered a strange bug with my playthrough. By the time I came to work on this I had completed the main storyline and was in Mercenary Mode. I completed all the missions on the map and got stuck at 48/49 with no more missions showing as available despite removing all other map markers. Luckily, it fixed itself after I exited to the dashboard and reloaded the game.
There are 9 different regions in Panau each of which has its own faction stronghold (3 are Ular Boys, 3 Reapers and 3 Roaches). Once you have secured a faction stronghold the faction missions in that region will be unlocked. Simply rinse and repeat for all regions. Some regions have more missions than others.
If you do happen to get stuck on any there are plenty of Youtube videos out there containing complete walkthroughs for every mission. As mentioned by Dimrill the missions can occasionally bug and fail to unlock but exiting to the dashboard and reloading should fix the problem.
The video below shows me finally unlocking this achievement.
The first thing to watch out for is that when playing the main story missions (marked as Agency Mission on the map), you'll be tasked with:
For the non-spoiler version, this is Mission 6, and its starting point is on the central western beach of the main island, north east of the central crescent island, aka Skull Island.
The second reason this can be missable is if you complete the settlement Pelantar Minyak Gerudi Besar before completing the mission:
As you should know by now there are 3 different factions in the game. As you progress through the game completing side stuff/objectives, main story missions & causing chaos you will unlock faction missions.
If you open your PDA you will be able to see all of the missions on your map. They are triangular in shape and each are coloured for which faction they represent. Most of the missions are small and very easy to complete so these won’t take you long at all.
Simply finish all 49 during the normal game mode or during mercenary mode & you will earn the trophy.
For every factions' stronghold takeover, certain areas of the map will be added to their territory. In this area you will be given a variety of faction missions. Complete all missions to obtain this achievement.
Conquering new areas by subsequent takeovers will add new missions to other areas of the map.The third bar on the map screen represents the amount of chaos needed to unlock more missions in the existing territories the factions have.
Note: Completed missions will disappear, which makes it very easy to track down the ones you haven't done yet.
For every factions' stronghold takeover, certain areas of the map will be added to their territory. In this area you will be given a variety of faction missions. Complete all missions to obtain this achievement.
Conquering new areas by subsequent takeovers will add new missions to other areas of the map.The third bar on the map screen represents the amount of chaos needed to unlock more missions in the existing territories the factions have.
Note: Completed missions will disappear, which makes it very easy to track down the ones you haven't done yet.