There's 10 coins in Episode 2 to collect.
I show where they all are in my walkthrough and mark them in the video as I get them.
coin #1: 15:25
coin #2: 15:55
coin #3: 16:10
coin #4: 16:55
coin #5: 17:30
coin #6: 18:00
coin #7: 18:20
coin #8: 21:10
coin #9: 22:45
coin #10: 24:25
My 100% achievement walkthrough video for this game
Episode 2 is at 15:00