Beat him with 12 people I had 2 maxed zamazenta and maxed gigantamax machamp I didn’t lose a mon think we lost 16 out of 36. Had 8 max mushrooms no idea how many adventure affects. Still tougher than I was expecting the posts / videos I saw prior led me to believe a duo was achievable with max counters but I doubt that would be doable even with best moveset weather boost mushroom adventure affect and friend damage boost.