You can get crazy amounts of pain early in the level where you have spikes jutting up and down before the first mine fielded just get on a spike and hold down.
do the exact opposite of what the walk through tells you that strategy has no place in this new play stile. instead form a huge group of POWER by using the 0 command to put them in one spot and then slowly advance them. then once they are near the castle use hurclulys strength to up their power to make the final push through wile simultaneously lunching the phoenix spell so it hit's just as the rage wave occurs. then use the lightning bolt spell to strike down the next one and then by the time the third comes the castle is already destroyed.
i agree up killing speed and then add more attackers to balance the faster killing also keep the experience rate the same the additional attackers will increase the experience per level
 "Endless Zombie Rampage 2"){kind=icon}
 "Ragdoll Course"){kind=icon}
 "Thing-Thing Arena 2"){kind=icon}
 "The Great War of Prefectures"){kind=icon}
 "The Endless Zombie Rampage"){kind=icon}
 "Zening"){kind=icon}
 "Epic War 3"){kind=icon}
 "Fragger"){kind=icon}
 "The Tower"){kind=icon}
 "Super Karoshi"){kind=icon}
 "I Love Traffic"){kind=icon}
 "Crush the Castle"){kind=icon}