You know its called an "unstable test" right, like this is just a test of new features and functions and yes the difficulty is way way too high atm and people are making plenty of noise about it and the game being still in development meaning that this is all subject to change and you being like "I was going to pay for the game that I can play for free but now a test version of the game upset me so no promise money for you" is kinda entitled don't you think?
Support if you want too but this is a TEST version of the game that yes does deserve some criticism and much tweaking. In the mean time play 0.8.2 were the suffering is less if you don't want to help develop this iteration and come back when the kinks have been worked out, maybe then you can think about spending money on the hard work you have enjoyed.