Here is my complete video walkthrough for Episode 2. The walkthrough is include all optional graffiti.
16:18 - Optional Graffiti #1 (Stagehandwriting)
25:58 - Optional Graffiti #2 (Radical Piratical)
34:47 - Optional Graffiti #3 (Feels on Wheels)
48:58 - Optional Graffiti #4 (Canon Wall)
51:34 - Optional Graffiti #5 (Wishlist)
57:55 - Optional Graffiti #7 (Tread Harshly)
58:38 - Optional Graffiti #6 (Friendly Forest Friends)
01:06:08 - Optional Graffiti #8 (Permanent Record)
01:20:32 - Optional Graffiti #9 (Vanity Fare)
01:41:34 - Optional Graffiti #10 (Creature Feature)