Hi!
We are sorry you feel like it is unfair.
But we love challenging games, have you tried maxing out your upgrade tree?
It should get easier, and an hard challenge is all the more rewarding once you finally beat it :D
yes, i did max out the upgrade tree
and no, i did not even get close enough in the process for it to feel remotely winnable
you have to constantly kill the small enemies and collect the orbs or else you die in 10 secs and
you also have to avoid both the boss and the trail or else you get one shotted, even if the trail is already fading it still one shots,
and a hard to see one-shot combined with extreme fast pace and precision demanded makes the boss fight feel very unfair
The main issue I had with the boss was the trail extending behind it once it started dashing. Many times I dashed through the boss only for him to start dashing and me land in the trail resulting in instant death. Dodging the trail and the boss was not an issue, but an instantly spawning laser behind the boss after his attack really frustrated me and not in an "oh man I know what I did wrong but I'll get them next time!" kind of way.