It took me 2 days to get medium badge, in some games it takes few hours to get hard ones. Wouldn't recommend this game to anyone. Graphics are so ugly, UI is weird - can't even see stats on cards in hand, have to scroll through premium options to buy a single freaking standard pack. With so much P2W this game shouldn't have even thought about having energy bars scaring players further away from it.
For new players like myself. The most effective way to start the game is - everything(including Oil) to 25, then 50, 100 etc. It will double speed of everything on earth each time.
Just completed it in one run (without using wings even once). Dammit it's hard. I excavated around Spider got stats and a good weapon laying behind him, only then I killed him. For last boss use healing pots. At least 15x150hp and 5x300hp. The hard part is 1-30 levels. After that it gets pretty comfortable with good mp regen and healing spell. On 75+ levels I ignored almost all strongest mobs and used excavation to do so. And of course in the late game (60+) it's important to enchant all your items.
Thanks to AleksaN4's comment I beat it on medium, a few moments after HighVoltage attack he died(no white beams dodging whatsoever), just try to be inside the crab all the time and land most of the hits from every weapon you've got. Don't forget to dodge one-touch kill special attacks from crab.
"10k gold earned medal seems bugged." Yep, I can't get it, maxed out everything. Got every medal except "You've got Heart"(more like you've got no life/dev's got no Heart) and flicking "Gold, Please".
Game seems to work. Blue star's and Handheid's banners doesn't though. That's what I get by clicking them: "KongBot can’t find the page you are looking for."
I complete it in 10 minutes... Is it really a hard badge??? Without any tips or walkthrough. That's kinda disappointing. Though I like the atmosphere of this game.
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Fixed!