So, ok. It's time to set beta release live.
To get access to beta release in Steam:
1. Right click on Second Chance in steam lib
2. Settings
3. Beta-release
4. Choose "testing_new_content" in list
5. Game will be updated. We can play it.
6. To revert changes, just make the same, but in 4th choose "Decline"
Game starts at chapter 5 - it's ok
When game ends, game will be closed - it's ok
Don't forget to report all bugs in game discussions.
It's not yet finished chapter. It's just public beta.