Actually I do feel like the mechanics of both attacks need further improves. I originally planned to make the dark attack a constant beam that has wind-up time and cannot change direction while attacking but I was afraid that I will not have enough time playtesting.
As for now, I have many more ideas for completely different dark attacks that need to be tested: a whip made of dark energy that allows you to grappling hook on walls and enemies and swing beneath them, a semi-auto rifle that creates mini blackholes on hit, or a reversing bullet coming straight from the movie Tenet. I'm very lazy though so I'm not sure when will I actually go test them out :p