A Good Listener

01 - World A2, go straight from the spawn point
02 - World A4, go straight from the spawn point
03 - World A5, Behind a wall ahead and left from the spawn point
04 - World A7, next to the spawn point

05 - World B2, turn around at the spawn point
06 - World B4, go straight from the spawn point
07 - World B7, right of the entrance to "Big Lump of Mine"
08 - World B7, left of the entrance to "Bouncing Side by Side"

09 - World C1, left of the road heading towards the bridge
10 - World C3, next to the spawn point
11 - World C5, left side of the level in the open
12 - World C6, right side of the level in the open
13 - World C7, right side of the level in the open
14 - World C7, back left of the level, behind some walls

15 - Messenger Island C, between the red and blue transmitters
16 - Messenger Island A, near a fan
17 - Messenger Island B, behind the building with the tomb

18 - Tower Floor 1, outside the elevator
19 - Tower Floor 2, left of the puzzle entrance
20 - Tower Floor 3, before the puzzle
21 - Tower Floor 4, left of the puzzle entrance
22 - Tower Floor 5, before the puzzle