Hi !
Goudere is a submissive personality who can go very far in order to please her master or when she feels danger, it's a dedicated submissive follower.
Oujodere is also a submissive personality but who acts calmer and classier. It's somehow a mature version of goudere.
Hope I answered well :)
- I don't limit the characters' development to these definitions, they're just a rough image of how two characters of the game will be in the future.