I noticed how difficult it is to obtain certain elements (like rubies). For some reason, the randomizer is not working properly when upgrading equipment. I tried to upgrade a piece of equipment with 20% success rate and it took over 20 tries. This happens more frequently than you think. Isn't 20% 1 out of 5 chances? For the amount of pain it takes to obtain these precious elements, this game is beginning to become quite frustrating. Perhaps there ought to be a way to purchase elements with all the extra silver I accumulated repeating missions countless times. After all, I have so much silver, I no longer have anything to purchase with it.
Note aside, there appears to be a bug having to do with the blue arrow showing which mission to do next. It appears stuck on a Nar Ghal mission, level II, and I have not purchased this hero.
This is an addictive game and I hope it will be expanded to include new missions.
I purchased 2 gem packs. It would be nice if there was a way to reset the game to start from scratch, and keep all the gems that I purchased. Hope you can make this happen.