Don't worry, the rewards aren't the classic SEGA character skins.
It's fine. Though, at times, I wish I had more friends to play with... But these days it's all done over Discord.
I don't think that's an official way to get it.
There is no ifficial way, that's how Steam wants it for delisted games.
The Raider Lanolin skin is already her second costume actually.
Her first costume was like this ...

I must had missed her. I don't mind spending straight up money for content I want as long as its cheap and only every now and again.
For example, I wanted the cymbal monkey, but I had to have tickets to earn it in an event or something? I dunno, I just wanted it as my in-game icon picture.