The RTP (return to player) seems to be pretty high, and the slot is low volatility with more frequent small wins. To get to level 100, follow the consensus strategy that's already been suggested of medium to large bets on Spin of Fortune.
I got into this as a distraction from Ukraine/Russia and it quickly turned into a 16 hour/day ordeal. There's already some great posts about how much of a time sink this game is, so I'm not going into that, but head those warnings.
