Other questions

[jm021155]

1) Can you select a save/scene in the game and replay from there to unlock other achievements or do you have to start from scratch?

2) Question about the ending, contains spoilers! I managed to get 3/5 on the deck, just to be shot by the army. How can you avoid this, I thought I saved at least more than half of the gang and then this happens. How to get other endings, simply by selecting other options during gameplay???

[Kenpoleon Bonaparte]

1) Technically, you should be able to. In reality though, there are so many decisions to make, and from several different characters, that I don't think it's really feasible.

2) Yes. Make different choices with the characters.

[WeaZeL]

1) You can use multiple save slots. When you select a scene, you get an option to create a new save slot from the start of that scene or you can choose the override option. Override removes your progress after the selected scene so you're basically rewriting the story from that point on your current save slot.
The progress for collectables are stored in the options save file. So you can reload a scene, get what you missed and then quit without losing the other collectables that you found.

2) I think the military shows up to kill you if you reveal to them (on the radio) that you know the name of the ship "Ourang Medan" - They assume you know too much about the 1974 incident so they come kill you to keep it covered up. You should be able to safely give them your coordinates but don't say the name of the ship