We started out by planning a branching tree system, so we always knew from any one level which possible classes you had, and could make the levels possible with everyone. But then time started to run out, and we had to make all the levels converge on a single final level, which was only possible with a thief, or a combination of combat classes. The thief makes that final room ridiculously easy.
But I think we did a fairly okay job at presenting the potential of this idea if we'd had a bit more time to touch up the levels. Thanks for the feedback, really appreciate it!
- Joe