This could have been a pretty good tactics game along the lines of Into the Breach. It's not as good as ItB even conceptually (the balance is nowhere near as tight), but on the plus side, it does have a stronger theme and more difficulty options.
Unfortunately it has been released in a totally unacceptable state and barely seems to have been tested at all. Variously I have encountered soft-locks, missing tooltips, many instances of mouse-clicks not doing what they're supposed to first time, and miriad cases of abilities not working as described. One special ability only sometimes deals any damage as it's supposed to (no obvious pattern); two more (on the same character) are supposed to give bonus dodge, but one never does, and the other does only sometimes.
For some reason most of the other reviews are pretty glowing. The games problems, while glaring, are not *very* obvious in the first few hours of play, as the three starting characters and their loadouts *mostly* seem to work, as does the first region of the game. But by your second run, you will be drowning in bugs.
Basically uplayable. Also, there is a patch out (it fixes many bugs, but there's a long way still to go), but predictably, it doesn't seem to be available on GOG yet. Caveat emptor