A Krayt Dragon said:BloodRaven644 said:Shot about 20 bundles of dynamite out of the air in the last 3 days; no achievement, nothing. Went and deleted my save data everywhere, started a new game, reached the shielded guy that kills the pilot, shot his dynamite outta the air and the achievement popped for me no problem so i can also confirm that deleting save data everywhere works.
Do I really have to start a whole new game for some achievements?
For the achievements that no matter what you do, wont unlock? Yes you will but you'd have to go a step further and delete your save data everywhere for it to work cause I needed both 'Chatterbox' and the dynamite achievement but could only get Chatterbox in the new playthrough, not the dynamite achievement which forced me to start the game a 3rd time after deleting my save.
Just starting a new game won't help, you need to delete your save data
which in turn forces you to start a new game.
This method may or may not work (I haven't tested it) but I'd say if you aren't that far ahead in the game, to go and delete all your data now and start a new playthrough and see if you're able unlock all of the achievements in one go without trouble.