The question is in the subject, in more details:

- how long it takes to go through the game?
- how many floors/levels are there?
- what levels can characters reach by the end?

I have no idea what the maximum character level is but I read that the game is between 10 to 15 hours long and has 13 floors.

When the edtor is out there will hopefully be many more dungeons created to increase the games lifespan :)

I assume 10 hours is an optimistic (with solution) version ? :P

I think so, I think 15 hours is far more likely, seeing as how long figuring out some traps takes.