As you can see, to succeed you must roll 1d6+level against 3+level - thus giving you a 50% chance of beating someone of the same level.
So, overall, would I play this game? Yes! I might be tempted to simplify it even further, doing away with classes and class skills. This is easy to do out of the box: just let everyone be a freeman and pick any skill they want.
The Rules Book is designed as a stand alone product that can be used independently, but it is intended to be used in conjunction with The Mythos Machine, a web application that fully integrates the Elthos RPG Rules and provides World Building and Character Management Services (among other features). Together they form a powerful combination of fast-play and comprehensive computer support.