The Citadel of Chaos

The knives hit your magic shield and drop to the ground.
The Wheelies likewise bump into the shield and bounce off, somewhat mystified.
They chatter to each other, holding you at bay while your Spell wears off.
They seem to reach some sort of agreement
and one rolls off back up the corridor, presumably to fetch help.
The other two reach for their belts and pull out small blowpipes.
Putting some kind of pellets in their mouths first, they prepare to aim.
You will have to leap on them first with your sword.
You must resolve this battle by fighting them in turn until you win.

You may take either the left-hand passage,

or the right-hand passage.