I struggled a bit at first to master the melee system, but now it's okay. It's not hard to understand but as it was written before, it's really stressful and could get a bit annoying on the long term.
So far, I'm stuck at the fight with the 3 robots (including the big one) at the bay. If your fight is not perfect, it's over in 2 rounds and you have to start it again... it's kind of frustrating ! I have the feeling I spent more time doing the same fights over and over again than exploring the ship ^^
And if anybody can help me on the use of the special skills... I can only get a "miss" at the dash, and I don't see what to do with the red zones when I use it!