The website look good but he's incomplete (are you waiting osu!lazer for add some parts, like the gameplay sections?)
Suggestion
In the site there is no space between the side-navigation at the left and the main content of the page, and it's a little hard to read. You should add in css/main.css these lines in the .main section (~ line 30) :
padding-left: 12px; padding-right: 12px;It's for add a space between the side-navigation at the left and the text, it's better to read.