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