Jam-King's Big Bash

The Jam-King is throwing a big birthday bash, and it's your job to show him what's what!

In this mashup of Roguelike and Chess elements, you must delve to the deepest depths of the Jam-King's castle, all the while avoiding his guests. Lucky for you, they've all had a bit too much sugar! 
Can you make it to the deepest level?

It's a butt-kicking job, but somebody's gotta do it...

... you, you have to do it.