In here you'll meet a few Cult Minions. There will be a total of twelve, with four per screen. They are very resistant to the magic of the four starting knights, but less resistant to the magic of other playable characters. They can, however, be juggled relatively easily. Watch out since their magic and combat is rather strong. At the end, walk through the arch into a room with four doors, three of which will have a magic barrier. Each door leads to a boss battle you must endure, so if you haven't already, go stock up on health potions. Go through the first door.
- Main article: Painter
The first door leads to the Painter's Room. This is a very easy boss fight once you know how to beat him. What he does is to come down and paint objects onto his canvas, these spring to life and will try to run into you. On touch they will instantly cause a massive amount of damage. To fend them off, simply use ranged or careful melee attacks. Magic works to different degrees on them, but is the simplest and often safest method of taking them out. You want to strike the painter when he is coming down to draw onto his canvas, but leave before he finishes his painting (usually two brush strokes), because you could be hit by the painted object otherwise. Once his health is low enough, he'll start painting two, and then three objects. After that, he will run around the room while calling objects into existence. These are much weaker than the previous iterations and require only one hit to vanquish which allows you to focus on the boss. He should go down fairly easy as his paintings are his only means of defense. Once he falls he'll cough up a load of food for you and, if the unicorn was on the screen when he died, a new weapon will be dropped: the Unicorn Horn.
After he's done, walk up the stairs at the end and destroy the purple crystal. The big center piece is the one you want to get rid of, the rest are merely in the way. Once it's destroyed the game will teleport you back down and the second door will be clear. If you happen to die or just want to leave because of the low levels of the items, your progress through the boss battles will be stored. It's also good to know that the Painter can easily be farmed for experience, gold and a free health refill, if you don't mind the hassle.
The second door leads to the Undead Cyclops' Room. This boss is easy if you can dodge all of his attacks by continuously running through the play field. The Undead Cyclops' attacks consist on swiping a large coffin at the player, shooting fireballs through his eye, and opening up the coffin, unleashing the Undead Groom. The Undead Cyclops hops around on the coffin in an attempt to crush the player, while the Undead Groom rushes into the player. During this attack, both Cyclops and Groom are invincible. Note that if the Cyclops crushes you with the coffin, you will only take 5 damage and be immune to the Groom's attacks while in the ground. In time, the Cyclops will call the Groom back into his coffin and repeat a series of his previous attacks. Remember, you can block the fireballs by pressing (L2 on PS3), which brings out your shield.
After killing the Undead Cyclops, he'll drop the coffin and both, him and the Groom, will fade away. A boss chest will fall down from the sky and a ghost of the Groom and the Cyclops will levitate upward. Continuing will show another large purple crystal which, once destroyed, will unlock the next boss: the Necromancer. Also note that there is a new weapon in the Undead Cyclops' room. Near the arch leading to the next crystal, there is an "X" formed of bones, dig there and you will uncover the Wooden Mace.
- Main article: Necromancer
The third door leads to the Necromancer's Room. This enemy doesn't fight you directly for quite some time. The first thing he does is reviving some opponents. He revives quite a few at once, and because bodies are scattered everywhere, the screen gets messy fast and soon you won't know where you are. Bombs and distant magic attacks are highly recommended, since it's easy to lose sight of yourself in melee combat. Most opponents, if not all, will drop some sort of food. Be sure to get them, you will need it. The first revival is a bunch of normal sized opponents, but still relatively difficult. The second fight, however, adds three larger, "beefy" enemies to the battle. You'll wan't some points in strength too if you are mostly agility defense or magic. Sandwiches can work real wonders here to clear out most of the smaller enemies while dealing some damage to the larger ones.
Once this ordeal is finally over, the actual boss will come down to fight you. His style is similar to that of the Conehead Groom from the Wedding Crash stage. Just block and wait for a chance to unleash a combo. If you perform an uppercut and get him airborne, you can juggle him for a while, but he doesn't bounce off the floor well. Additionally, he's susceptible to freezing from ice powers, like those of the Blue Knight. The Necromancer will use "skeleton magic", where he will either shoot a skeleton at you (can be blocked) or summon hands to reach you from under the ground. A simple strategy is to use magic to knock him down and them move up and start slashing. Compared to the hordes you just had to beat, this is very easy. He'll drop his sword, the Evil Sword, once you kill him.
If playing co-op, when he lands get him between two players and just spam him with magic, effectively keeping him from retaliating.
The last door leads to the Final Battle.
1. In the first stage, the wizard will attack you with floating crystals. Simply dodge these until they are stuck in the ground and then attack them. Magic works fairly well on them. If you can, walk horizontally across the screen so the crystals land in a line, and use your splash attack to hit all four at once.
2. In the second stage, he will hop down from his platform and face the players directly. You can only use magic or arrows on the wizard when he is in his blue bubble, and can only use melee while he is in the red bubble. When the bubble flickers yellow, it means you have inflicted damage on him.
3. In the third stage, he will start to float around; just jump up and melee him. While he is floating, white balls will fall from him. These balls fall one at a time, and when they hit the ground, they will bounce and divide in several smaller white balls which will start to float outward. Avoid getting hit by these balls as they will hurt you. The smaller balls can be blocked with your shield. Once you have beaten this stage, a boss chest will fall on him. It would appear like you have finally beaten him, but on opening the chest he will come out as a huge spider.
4. In the fourth stage, he will turn into a large flying spider. A good way to beat him is to jump and use magic or sandwiches. Just keep hitting him until he dies. He frequently tries to jab you with his large side claws, and this can be blocked continuously with your shield. During this stage he continuously spawns Cult Minions, be careful not to get cornered by them. Because of his size, he can be easy to kill as long as you aren't on the ground.
5. In the fifth stage, just like the third one, he will start floating around. This time he will be a bit faster and a little harder to hit. Just jump up and melee him. The white balls will fall quicker and very frequently.
6. In the final stage, he summons fireballs from the sky to come down on you using his Demon Sword. Your best bet is to just wait until he jumps up to attack him. Jump up with him and get a few hits in before one of the fireballs hits you or dodge the fireballs by sprinting; then start to circle back when he starts to come down and hit him with a rolling attack. When his life is about 2½ of the way down, he will start doing a cartwheel across the screen while holding his Demon Sword. He goes in a straight line, so he is easy to avoid. Take this opportunity to finish him.
After defeating him, his fortress will crumble and he'll plummet to his death. He'll leave the magic crystal and the Orange Princess behind, and to the safety of the Castle Crashers. He drops the Demon Sword, but you only have about five seconds to pick it up. There is an off chance that the Demon Sword will fall out of reach, being either in the background or not on the platform entirely, depending on where you kill him. Afterwards, you will catch the Orange Princess and see the end credits.
- When you kill the Painter while the unicorn is on the screen, the unicorn will die and drop the Unicorn Horn.
- In the room with the Undead Cyclops, there is a small "X" made of two bones (it's by the sock; if you can't find it, bring Pazzo). Use your shovel and dig it up to uncover the Wooden Mace.
- The Necromancer will also drop the Evil Sword if you wait a couple of seconds after his defeat.
- If you play this level with someone who already completed the game, you won't have to fight the three bosses; you'll go to the final boss fight and it will still count as completing the game.