Done in the classic style. If you're tired of all the LitRPG/Xianxia/Harem/Smut around, give Blood Demon's Retirement a look. Maybe you'll enjoy it. ;)
I haven't gotten very far, but from what I have already read, it's really good. (You're cover is also very nice. The title got me interested, but the cover is what made me start reading it immediately.)