Here is the full list of all 25 Blair Witch achievements.
Find out what happened to Bullet.
Collect all wooden dolls.
Collect all victim's photos.
Collect all of the psychiatrist's notes.
Pick up all the trash.
Help Ellis to get his redemption.
Let the VA know about the lumberjack's death.
End the game without killing any monsters
Patch things up with Jess.
Collect all dog tags of the fallen comrades.
Pay your respects to sheriff Lanning.
Find out what happened to Peter.
Become Carver
Break 10 totems.
Let Bullet bring you 10 things
Kill 10 monsters.
Make the pizza guy lose it.
Collect the first dog tag.
Kill your first monster.
Pet the dog
Walk 100 miles...
Score 40 points in Cobra.
Collect the first wooden doll.
Collect the first victim's photo.
Collect the first psychiatrist's note.