Overview
This is how you can complete level 4.2 on Gold in Expert mode.
My Video Walkthrough
Details and Tips
The video includes the restarts I made to make sure I start as fast as possible.
Near the end I pause to check exactly what resource is needed.
My tips:
1) Be very fast of course and take care of your workers priorities.
2) Use only the Stop Time.
3) Don’t build the level 3 Gold Mine.
4) Take what you need with Charon (pause if needed to make the right choice in the end).
5) Mine 4 gold (the one that needs 6 food).
It’s the most difficult Gold on Expert but it’s possible as you can see.