The battle started with the orcs climbing the castle walls. To delay the orcs Faffy spat lighting and Zoidberg spat ink. While some the orcs fell more still climbed up.
Oswidge used his magic to conjure an elephant above the orcs, crushing them. He transformed other orcs into newts.
Leela used her martial arts on the orcs. She kicked and punched them despite their greater size.
Bender used his great strength from being a robot to pick up an orc bended him, and threw him like a boomerang at the other orcs.
Candy also used martial arts on the orcs. She kicked and punched them despite their greater size.
Zoidberg spat water from both his freshwater and saltwater stomach on the orcs. The orcs braced themselves, but nothing happened.
Twinkle The Marvel Horse flew through the air kicking the orcs. During this he felt secretly delighted.
Hermes caused the orcs intense pain through telling him his dark, horrifying knowledge. How bureaucracies work!
Before the orcs decided they should attack Zoidberg Faffy spat lightning at them, electrocuting them in the process.
Fang used her spear to knock the orcs down on their backs and proceeded to stomp on them. Of course she couldn't used the pointed part of the spear since this is K+.
Amy used her martial arts on the orcs. Yes, this is derivative, but not every battle can be unique.
Lula flew around in the air blasting energy bolts at the orcs.
As for why Lula was not with Dave, he was standing back-to-back with Fry surrounded by orcs. Both were utterly terrified. They rapidly flailed their arms around in panic. The orcs fell down and Dave and Fry felt relieved they came out alive.
Of course, as Lula knew, the orcs were weakened enough by everybody else which made them barley put up a fight.
Knowing defeat the orcs fled.
"Curse you barbarians and time travelers!" yelled Chuckles. "You foiled my plans!" He then fled.
And so our heroes defeated the Dark Lord Chuckles The Silly Piggy. With his defeat the Planet Express Crew could return home. Overall our heroes felt pretty good.
"That's what they think," said Chuckles. "Now that phase one of my plan to take over the world is complete it's time to move to phase two. Muah ha ha ha ha ha!"