In the final and third episode of Life is Strange: Before the Storm, the player has to find a total of 10 graffiti and every picture you find will reward you with a trophy.
The other trophies are part of the story and will be unlocked during the game. So all you really need to unlock platinum are the graffiti collectibles.
In each of the three episodes, you’ll find 10 of these collectibles, 10 per episode. So you won’t miss any of them, once you have played through the game. Even if you miss one, you can always go back over the chapter selection and find and complete the missing graffiti.
If you are near a graffiti, you will see a white circle. Then you can press Square button on PS4 or X button on Xbox One to paint the graffiti. There are always two options, it does not matter what you choose.
Here are all the locations of graffiti
In Rachel's room Zoe wants to make for some amusement. Go to the map of the USA on the wall of the room and give it a quote from Chloe or Rachel.
Graffiti No. 2
In the same area as the previous graffiti, you can put a second in Rachel's room, in her notebook on the desk. Just give her another subject - anatomy or herbal medicine
Graffiti No. 3
There is still room for a bit more rebellion in Chloe's room. Look for this trophy on a shelf at her desk for a photo of the Blackwell Academy, look at it and put it back. After that you have the option for a graffiti.
Graffiti No. 4
Leave Chloe's room and go into the room to the left of her to find an old car calendar on a pile of cardboard boxes. Adds the image of the yellow sports car to small details.
Graffiti No. 5
And in this chapter, there is again the possibility of an unusual graffiti on the junkyard. First take care of the beige pick-up and clean the filter, then release a little creative steam under the bonnet with the newly formed oil stain.
Graffiti No. 6
At the hospital, Go to the waiting room to the right and look for the pin board with the hygiene notice poster. Then you can let the nurses on this laugh about a clean ... or something more filthy joke.
Graffiti No. 7
This graffiti will only be unlocked in the hospital if you hit the broken candy / wending machine three times. You cannot choose the motive, but be sure: Chloe thinks of something suitable!
Graffiti No. 8
A Penned Appendage:
And a third painting in the hospital! Talk to Drew in his hospital room, try to steal his pudding, and decide freely to your own taste in the little "mini-game" that follows. As a reward there is not always a pudding, but certainly a painting on Drew's plaster leg.
Graffiti No. 9
While you look for necessary information in the house of Amber - more precisely in the office - you will find a bottle of wine in the left desk drawer, which in Chloe's opinion is a bit too well hidden. Change that with a graffiti as a hint.
Graffiti No. 10
In the burnt-out interior, take the knife out of the beam and turn around to remove the corrugated iron behind you, so that you can deface the hidden graffiti with the knife.