Doing some hard drive diving and came across a build of the game from just around the time it first came to PC: v1.1.5. 
It's quite a bit rough(er) around the edges and lacks several visual settings so I'd still recommend playing v2.2, but it's an interesting look back.

I'll upload more old builds and hopefully some alphas as I come across them.  Still hoping to come across a 1.0 build from before the elemental system and style gameplay-benefits were added, but I think I only released that version on XBLIG so my hopes aren't too high.

Note: When switching between versions you will want to back up your save file.  You may be able to carry progress between the two but it could ALSO get very weird. 

You can find your save at C:\Users\{USERNAME}\Documents\SavedGames\Chester\Chester\AllPlayers