Dungeons & DPS - an idle game with RPG elements

I've been working on an RPG-skinned idle game with Lonely Troll Productions. There are four upgradeable characters who each have a different focus (Click damage, Idle damage, Income, or Healing) and a mini-map with different dungeons you can progress through.

Game plays in unity web player. Firefox recommended, has been tested on windows but not mac or linux.

We have just hit the testing phase of development and would appreciate any feedback, but would like a focus on balancing the characters and how the difficulty curve feels.

Play the game here.

How to play:
Click on buttons with the mouse. Upgrade characters, deal click damage, and navigate dungeons. There is an auto-progress option to move you through the current dungeon, but you have to go to the next dungeon manually.

Known bugs:
None!

Future plans:
Make loads of art, balance based on player feedback, discover bugs.

Thanks for your time and testing. We will be updating this post as the game improves.

EDIT: Updated the game to v0.02a.