0 0 0Easily achievable as you play through the game, specially if you are going for all achievement anyway.Here is 100% complete guide to all achievement/collectibles and full game:
0 0 0Flare Gun ammo is scarce, so when you do plan on wiping out some Taken with it make sure that you get 3-4 of them at once. Try to lead them in a circle before vaporizing them, to get them within close proximity to one another. You should still get this one within your first play through, just don't be so stingy with the ammo that you end an Episode without expending it all.