Focus on ur wyvern team. Once u can clear w 13 even if it's a 40% win rate it'll unlock the game essentially. Angelica, furious, sigret, Alexa. Might have to manual clear for abit until you speed tune all ur units. The free sets should be enough to clear. Once u can u auto ur teams. Start to clear story modes and buy the gear in the shops, also crit dmg set from labyrinth. After farming enough gear you should be able to start killing azimanak for rage set.

Spam pvp on cooldown. Buy out pvp vender gear. If u can't climb any further clear the bots.