Managed to do a solo Zangoose run of Emerald, beating Wallace at level 69, and Stephen at 73. Steven was annoying because of Skarmory. Couldn't Toxic me which was good, but Zangoose needs 5 turns to kill Skarmory, 3 for Swords Dance and 2 for Return. Tate and Liza were also annoying as double battles in a solo run are a pain. Getting Swords Dance super early though made most of the game trivial.