Contrast

The attractions are in Act II

Full Walkthrough :
Timestamps:

00:00 Intro
00:24 Act I: A New Dimension, Illuminated Achievements (Collectible 1,2,3)
02:31 Act I: Not That Kind Of Game! Achievement
02:42 Act I: To The Heroes Among Us Achievement
03:19 Act I: Room 529 Achievement (Collectible 4,5,6,7)
06:50 Act I: Now That’s Thinking With Shadows, My God, It’s Full Of Stars! Achievements (Collectible 8)
07:56 Act I: Punching Bag (Collectible 9)
09:08 Act I: You Broke My Finger!, A Carousel Of Broken Dreams Achievements (Collectible 10 – Streets Sweeper Achievement)
12:50 Act II: The Family Life Achievement (Collectible 11)
13:12 Act II: This Circus Is A Disaster Achievement (Collectibles 12,13,14)
17:39 Act II: The Cyclops’ Bottle Achievement
17:49 Act II: Just Like Harry Achievement
19:03 Act II (Collectible 15)
25:53 Act II: No Backpack Bird Needed Achievement
26:11 Act II: Handy Person Achievement (Collectible 16 – GroundsKeeper Achievement)
29:12 Act III: How’d you get in Achievement (Collectible 22,26,19)
33:36 Act III: Let There Be Light, FIN Achievements (Collectibles 20, 21,18,23, 24, 25, 18 – BookKeeper Achievement)
40:58 Streets Sweepers Achievement
42:06 GroundsKeeper Achievement
42:51 BookKeeper Achievement