The achievement -Lost Souls- might be bugged. It says to collect a total of 30.0k souls. I have over 300k and I've had over 30k at one time. Other than that I like it!
found a couple typos in achievements. the last of the legendary crafting ones says ledgendary in the title and then ledendary and ledgends instead of legendary in the description.
I think I've found a glitch. I made it to the last zone and all the way to the end, got the +1 skill point, and it just kept popping up so I thought it was giving me several. Then I tried pausing the game and it wouldn't pause. so I reloaded the game and used the skill point, and when I get to the last zone the white screen stays white and if I click to do a hell raiser or meteor strike it comes up but flashes all the pictures of each character no matter which hitter I'm using and doesn't stop till I reload the page. I thought it was because I had been running chrome to long so I closed it, it did the same thing when I reloaded the game, then I tried force stopping all the chrome related processes including flash and then chrome itself. I reloaded the game and it still does it. other than this I love the game and I still can't stop playing even if i can't get to the last zone.
 "Souls And Magic"){kind=icon}
 "Transport Defender"){kind=icon}
 "Auto-Attack!"){kind=icon}
 "Thrones of Fantasy"){kind=icon}
 "Berzerk Ball 2"){kind=icon}
 "Battle without End"){kind=icon}