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