I definitely like this so far, the little 2-D effects like the character animations bobbing and flipping to indicate physical movement is a great touch.
However, in the very first opening scene, I noticed that there was an error for you to scrutinize:
When the Fjor goes with Cinnacat and Fizzle to meet Coal and Jahti, a piece or two of dialogue was left out concerning the mercenaries learning why the girl was hiring them because of their skills. Somehow Cinnacat already knew about the artifact?
The music was a good choice for this style of an RPG, and I'm impressed overall.
Besides that script error, I would greatly emphasize correcting the combat scene animations when the characters are attacking. Especially with Coal (although his attack is pretty awesome as is), if you were to time the attacks with the damage and the victim's flashing to indicate damage...
You'd have a real kickass combat scene.
After that, the only real improvement that could be made is better art, graphics, and music. All of which are satisfactory now, and the improvements could very well be considered only as "tweaks."
Cheers~!
- Frostbyte