Hey Guys And Gals, Here is my 100% Achievement Guide & Full Walkthrough for Wailing Heights!
You will get all extras/Collectibles during the story APART FROM TWO!
This wasn't in the PS4 version so if you end up following a PS4 guide, be careful.
You can get both of these early on, the first time you possess lola and turn into a bat with
. Go to town hall where your objective is to get a book.
Fly up to the highest open window and enter. Fly up again into the rafters and this is where you see collectible extra 1.
For the second one, the first time you play as Abnorm. Press X To turn intoa wolf and once again go to the town hall.
On the very right hand side is where the collectible extra is. Again, just press A while next to it to unlock this one.
Go to 12:20 and 20:10 oin my video to see where these 2 extra collectibles are.
Hope This Helps!