Order to Charge's deck > use rex dinosaur kingdom deck to bait the order to charge and de-spell and twisters for heart of the underdog/banner of courage
Gearfried's Deck> cerberus deck with abyssal designator to send gearfried the swordsman to graveyard (Light/warrior)
Beasts> i think to use Angel 07 to cancel their effects and some cards to neutralize the traps
I'm at lvl 57 currently, the rewards are still the same. With keys, golds and SR jewel as rewards and gems when you complete the mission at stage 57. The only difficult thing here is to beat Mai lvl 40 3x consistently. As in 3 straight wins with no losses. and Mai is hard to beat at level 40.
Agreed man, spirits aren't easy but can be dealt with since the return to hand affect can be forced but the gemini deck caused me to add cards specifically for that deck build. Noblemen of Extermination and Devine Wrath were very useful for that deck.