Full soundtrack listed as the extracted file names:

01. 05_wasteland2_str (main menu theme) 00:00:00
02. amb01 00:02:05
03. amb02 00:10:46
04. amb03 00:16:23
05. amb04 00:21:23
06. amb05 00:27:27
07. amb06 00:32:27
08. amb07 00:35:39
09. amb08 00:39:26
10. amb09 00:44:05
11. amb10 00:48:13
12. amb11 00:52:21
13. amb12 01:06:11
14. amb13 01:19:28
15. amb15 01:24:34
16. amb16 01:29:18
17. amb17 01:32:35
18. amb20 01:34:52
19. amb21 01:40:15
20. amb22 01:45:15
21. credits 01:50:09

Composer ◆ Alistair Lindsay

◆ Tracklist ◆
0:00 RimWorld Trailer Music
1:47 Entry Screen
5:35 Terraformer
8:38 Moving On
13:23 New Day
14:55 Riding Out
20:06 Ice Shaman
24:35 I Like It Here
28:01 Night and Day
32:10 Tribal Assembly
37:43 Chaos Bringer
42:24 Close The Gates
46:25 Don't Freeze Up
51:21 Here It Comes
56:04 Mirage
1:02:55 Planetfall
1:08:00 Starscape
1:12:48 Ceta
1:17:01 Jovian Cycle
1:21:50 Rough Trail
1:26:15 Moon Harvest
1:31:21 Space Junk
1:35:24 Barnstar
1:39:31 Gathering In
1:43:16 Seasons Turn
1:47:08 Alpaca
1:51:08 These Lands
1:56:13 Traces
2:01:02 What Gravity
2:05:11 Waiting For The Sun