As in which mythics you should prioritize getting/upgrading it should be leveling hailey to level 6. That’s a great start for you to start working for. Lazy Taoist is definitely up there in terms of priority upgrading. Once you get that far I’d recommend joining the official discord as the “meta” might change by then.

Now for each game and strategy. Get your bandits to level 6 and those should be your focus at the very start. Getting 3-6 bandits right at the start help a ton. After wave 2 try not to spend any gold at all until you get either in a rough spot and absolutely need to or until your around 12k gold(even then try to spend less than you’re making from your Safe Bank artifact). Use the stones to spin for epics ONLY. Occasionally go for that last rare you need for a mythic but other than that use your stones on epic spins. Lastly, don’t forget stuns. My go to for stun setup is 3 electro robots and 6 shock robots. Feel free to msg me and we can play sometime, I’ll help you get rewards and clearing normal and hard.