Here is the full list of all 16 Dark Fall: Ghost Vigil achievements.
Complete Nigel's Saxton Map in the Boys Dorm.
Solve the Playground EVP sequence and witness the Pink Door.
Get access to Upstairs, Main Hall, by progressing.
Relive Thomas Harding's 'reverie'.
Find Steve's 'alternate' Oxford Ghosts book.
Find Steve's secret stash and print-outs.
Experience the time tremor, in the Attic.
Login to the OPG software.
Arrive at Harwood House.
Make the Dark Fall sigil, in Science Lab.
Open the metal grate to enter underground.
Finish the Greenhouse Seeds puzzle.
Present Louisa with the wrong meal.
Read the runes, defeat the Dark Fall. Good Ending.
Get killed by the Dark Fall. Bad ending.
Make the Dark Fall send you to Saxton. Saxton ending.