Definitely needs some UX improvements. At first I thought the in-game instructions were telling me to right click instead of double click. There should also be some indicator for when you don't have enough green bar to attack even though you're in range - grayed out could mean anything.
The game seems promising though. Hopefully there's lots of banter. I really like the battle system, but I wonder if WASD should be represented as up, down, left, right in the game. You don't really think in terms of letter names when moving with WASD, so the QTEs are kind of unintuitive.