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