Mihael had a few things to worry about.
His top priority was having fun. But he did still worry about earth. Not because he was heavily invested in that planet or anything but because for once he wanted to be a hero of sorts. Just for the hell of it and save the planet. Obviously, he didn't like heroism and had no real motivation to save anyone but he just wanted the thrill of it and then be done with it.
And that was good and all but with Archisveisaar in the mix, things didn't really look all that favorable for him. That beast was foul and with Mihael's current capabilities, it would be impossible for him to do anything about it. And since the soft side of Archisveisaar was no longer a part of it, negotiations were off the table.
So yes, things were actually making him worry for once. This stress, this level of pressure- 'Actually not bad…' It wasn't the first time he was experiencing such a thing.