Rebels Basic Training Event

Opening move: stun Thrawn. Ignore TFP and Vader initially. Don’t use call to action on CLS until Thrawn, EP and Vader are all dead, as he will gain a lot of turn meter when allies are attacked if you don’t. Keep both EP and Thrawn controlled with CLS and Han, prioritizing a hard kill on Thrawn first. Make sure Thrawn and EP have defense down on them so you can alternate basic attacks with CLS to keep them both stunned (Hans special will also stun, and his basic will remove TM to give CLS a chance to stun). Kill order is Thrawn, EP, Vader, TFP, troopers. Opening moves should be:

Han, stun Thrawn
CLS, use the force on EP to remove TM
Leia, basic initially (use special after R2 uses smokescreen for the offense up)
R2, use smokescreen on OB
OB, use ability block first, taunt second. You should be able to ability block both stormtroopers, meaning you have time to kill EP and Thrawn before they taunt.

Good luck!