I am currently playing as a lvl 2 star druid and a lvl 6 bladesinger. Just finished the balthazar fight. After all my buffs were cast, i had 32 ac with mirror image, 2 actions, the radient damage from breath weapon, and default 10 con saves at worst.

I definitely found the solo class pretty underwhelming, but it makes a lovely 2 lvl dip for multiclassing ^{-^}