This game is not very balanced. With free cards you cant go further then the first 5 levels or so. The level with the spikes are unbeatable. Even the first levels are getting so hard, that you cant beat them. With my 12 stamina i have like 2 or 3 rounds that i can play, then i have to wait ages to play again. The first days it looked funny, but now its more or less unplayable. And the bounties are buggy. There is one, where i have to use an earth card for 3 games. I used an earth card for like 10 games, and got one increase (well maybe i have to win the game to increase the counter, but as earlier mentioned, its nearly impossible to win anything).
Does someone have the same experiences like me?
many people that have played the game including myself can tell you that every level if beatable, the reason you are having problems beating the game is because you don't have a good deck of cards. you need to build your deck in order to advance in the game, takes time and determination, ( you could buy the cards but since this is a soft version, not all option are available yet ) this version is just to find bugs and stuff like that and doesn't represent a finish product.
I started playing the game just like you with the basic free cards and took me many days and many tries to beat the spike levels. Now after a month of playing the game, I have been able to put together a stronger deck and those levels now are peace of cake to me. try earning gold coins, buy cards with those coins and fuse them to get stronger cards, once you get the hang of the game you will like it.