Finished the game but have a few questions

[raymon57]

Just finished the game today....hooray! I enjoyed it very much, however I'm just wondering after reading several posts on the forum, is there more than one way to get to the end? Are there secret rooms or levels which I missed? I seem to have only gone through 6 or 7 levels?  What's the idea of the cards and how many are there to collect. Does collecting the cards have an outcome on the way the game plays? Any ideas or hints?