Cry of fear all endings

-1st ending
Don't kill the Carcass.
Don't give the gun to the Doctor.

-2nd ending
Don't kill the Carcass.
Give the gun to the Doctor.

-3rd ending
Kill the Carcass.
Don't give the gun to the Doctor.

-4th ending
Kill the Carcass.
Give the gun to the Doctor.

-5th /secret ending/
Make sure you finish a game with the fourth ending and unlock the secret room and the "Weird Package" item in there.
Start a new game and you’ll see that you unlocked a secret room (you’ll find this room at the very beginning of the game, the first door on the left after you see a black silhouette walk away).
Take the package addressed to Simon Henriksson.
Keep the package with you until you get to the college campus.
Find a yellow mailbox near the bus stop with the tape recorder.
Interact your package with the mailbox and keep playing as usual.

-6th ending /Doctor’s Ending/
How To Get This Ending???
You just have to finish the main campaign with any ending to unlock the “Doctor Mode”.