Mission 23, named CO2 Build-Up has the player replacing the CO2 filters on STA after the previous attempt to restock the scrubbers failed.
Walkthrough:
https://www.youtube.com/watch?v=UyWve5bJZ5c&t=3s
Objectives[]
| Award | Cost | Time | Checkpoints |
|---|---|---|---|
 Gold
|
< $7,000,000 | < 4m | No |
 Silver
|
< $10,000,000 | < 6m | Yes |
 Bronze
|
< $15,000,000 | < 10m | Yes |
- Reduce the CO2 to a safe level
- Budget: $15,000,000
- Max time: 10m
| Missions | |
|---|---|
| Tutorials | 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 |
| Career (list) | Mission 1 • Mission 2 • Mission 3 • Mission 4 • Mission 5 • Mission 6 • Mission 7 • Mission 8 Mission 9 • Mission 10 • Mission 11 • Mission 12 • Mission 13 • Mission 14 • Mission 15 Mission 16 • Mission 17 • Mission 18 • Mission 19 • Mission 20 • Mission 21 • Mission 22 Mission 23 • Mission 24 • Mission 25 • Mission 26 • Mission 27 • Mission 28 • Mission 29 Mission 30 • Mission 31 • Mission 32 • Mission 33 • Mission 34 • Mission 35 • Mission 36 Mission 37 |