As a customizer and builder, I like the set.
As a LEGO fan, I don't.
By way of explanation: On its own, if this was all you had - the set would be kind of crappy. Two figures duking it out on a kind of lame overall set with one of those silly trap doors and the stand for Santis, as has been said, is poorly designed.
However, if you have a lot of LEGOs and enjoy building from imagination rather than instructions, it has good pieces, and the overall concept is good (rope/plank bridge connecting two things). With some added effort and extra pieces, this set could be pretty wicked.
The Shadow Knight is awesome, of course. And Santis isn't bad - the only really weak point to the KK2 line is the swords, in the opinion of this customizer. Armour and helms can be painted a better colour (all my Red, Blue, Purple, and most of my Green armour and helm sets are now Games Workshop (Citadel Miniatures) Chainmail or Mithril Silver.
So depending on what you do, this set is a 3/10 or a 8/10, respectively.
Forge not works of art but swords of death, for therein lies great art.
"The Gods made heavy metal and they saw that it was good." - Manowar