How to create hyper light drifter

In fact, I just need to move the character in this plan, I tried to do it with the help of 8Direction behavior, but I did not succeed, the character turned upside down, tell me how to do it so that it does not roll over (and better give the source)

I realize this is a super old post, but in case anyone else comes across it with the same question you need to set 'Set Angle' to 'No' in the 8 direction behavior options.