
Originally posted by Mark on the official forums:
We are opening the Public Test Branch up with the new Wholesale world in it. This is not the final version of the world, so expect to get caught up on weird collision, lost looking for an illusive check point or unlockable, and all sorts of other unpleasantness.
Unlockables earned in the Public Test Branch do not carry over to the main game. Currency earned in this mode cannot be used to unlock containers. You will be able to earn all these unlockables again once the level is promoted to the main branch- and unlock all their rewards.
To switch to the Public Testing Branch, right click on Hot Lava in steam and click Properties.

Select the BETAS tab, enter the beta access code "participationaward" and click CHECK CODE. After this the drop down above will let you select the Public Test Branch. After switching, Hot Lava will need to download the new content.

