I like this review, it seems that many SEGA Classics are well remembered. From your review I could see that Goldend Axe is a good game.

which has more than one genre such as a side-scrolling, beat 'em up, hack, and slash

As far as I know, every Beat 'em Up game is also a side-stcoller... I think every hack and slash game is also beat 'em up too. That's what I thought before. Are you sure they are different genres?

It seems you linked to http://www.ssega.com/golden-axe-ii, I was skeptical about the website at first then I read this.

Q: Is this legal?
A: Yes it's legal, by playing you are renting a copy of the games we own.

I like how they approached the topic.

I included this post in my Gaming Daily, you might want to check it out.