0 0 0Get yourself low on health and use flare when a Taken is about to attack you in that situation.Probably will happen naturally but you can always make it happen deliberately.Here is 100% complete guide to all achievement/collectibles and full game:
0 0 0You will need to be in a low state of health, aka the last bar of health. Once you are, whip out a flare and hold it (don't drop it). This will cause the enemies around you to back off for a bit. This may come through natural progression when you are playing on a higher difficulty.