Thanks for the report! I was not aware of specific issues with challenges; when the last update went live I checked #1 and #11 out, but nothing in between. After looking at it again, I do see some problems, but I'm getting slightly different results than what you describe.

What I'm seeing:

Game installed clean. Challenge menu shows 10/11 complete (odd, but intentional. this was done because challenge 11 is a preview of upcoming content, and so 10 challenges needed to be complete on install to make the preview immediately accessible).

Challenges 6-10 appear with the name '???'. This is working as designed, since challenge 1 hasn't been marked completed (challenges 1-5 must be complete before these names are 'identified').

Challenge 1 is incomplete, but it appears to work fine. Completing it also identifies challenges 6-10 by their proper names. However! I see that when closing the game, challenge 1 is marked incomplete again, which is a bug.

Challenge 3 and Challenge 10 crash when attempted. All other challenges seem to work properly.

I sincerely apologize for all of these problems. In the rush to get the content being previewed out the door in a previewable state, it appears I've introduced some bugs to how the existing challenge game works. It must be additionally confusing for a newcomer to see preview content mingled with the basic game features like this.

I will have all this sorted out in the next update. The checklist for that build is just about done, but I do still have to launch the game that the aforementioned preview content was designed for. I will a stronger timeline soon.

Thanks again for the notice, bug reports are always much appreciated.