Hi there, I followed the guide here using the pre-built filesystem. It booted and then I used the Network Manager as you mentioned (sudo nmtui) to get the WiFi going. Then I did the always-tricky-on-arch pacman -Syyu and it is up-to-date now and still booting. Thanks, great job!
After this I enabled and started the fan service as described here but it does not start when I raise the temps using stress -c 6 so maybe something is still missing.
For readers who stumble upon this: I used Release 1.1 and you need to login using alarm/alarm since the root password is missing 