The game is so buggy, if you choose a wrong deck you're stuck. You can't sell your cards because you need 30 in your deck at all times. You can't earn gold because even level 1 beats you, which only gives 5 gold..
I just completed the game within 20 minutes with this method:
Keep Page Down button on your keyboard pressed to skip the talk & use a text walkthrough for the answers.
Why the f are there checkpoints in the last part if you cannot warp to them and die in any possible way? If I fall down I have to start over again. Making something tedious isnt challenging, it just makes your game awful
For the first few hours it was an hard badge, but different players claimed it was too easy to be hard