I've been playing this game little by little over the last 2 months and I think I'm getting close to the end and have loved every bit of it.

I've gotten stuck A LOT in this game but have been able to figure out most of it on my own. There are no walkthroughs online right now but the Steam forum has some good hints. It gets frustrating, but part of the fun is getting lost in the game. This is easily my favorite OUYA game and one of my favorite games in recent memory; I'm a big fan of the original Zelda (and similar games of the era) and I think Elliot Quest does an amazing job in it's tribute to the style. It's supposed to come out on the WiiU pretty soon so hopefully a walkthrough will appear at some point.

 
The best way to grind in this game is to find a place where a bunch of flying monsters spawn near the entrance to the screen. Use the Whirlwind magic to kill them quickly and gather whatever they drop, run off screen to let them respawn, then repeat. This works great for leveling up quickly but takes awhile to gain cash.

Most of your cash will come from chests. Chests don't regenerate. Use your cash wisely.

Your character maxes out at level 20, be careful how you distribute your leveling points. That's all that I will post for now; the fun of this game is in figuring it out.