STRATEGY FOR CHALLENGE 4
Set the sword to follow the shield, and move the shield in a zigzag towards the dragon. That way, it slows down the sword to prevent it running in, and gives an open line of fire for the sword.
to beat #4, you need to control the shield, not the sword. try to move it in between the dragon and the sword... of course, with just the mouse its freakin hard. Be prepared to lose a substantial portion of your life
for 24, put the stick on the second ball from the bottom, and put the stick so most of it is on the right side. It should swing around the platform and smoke the king...