The previous game had Artoria facing off against Gilgamesh and Iskandar at the same time. This game ups the ante (and awesomeness) in one of the final Extra stages by pitting any playable Servant against all four of Artoria, Gilgamesh, Iskandar, and Darius III followed by a boss fight against Karl. The badassery just oozes from the screen!
Karna versus Arjuna and Charlemagne is one for both sides. Karna uses his Noble Phantasm twice, and both times they fight back with their own. Charlemagne survives. Arjuna does not.
The third route reveals that Gilles de Rais and Drake were never Oraclized. Gilles resisted the process with his immeasurable faith, whereas Drake is too attached to the freedom of piracy to be that controlled, despite being as close as they were to Karl the whole time.
Karl revealing his ultimate power: A Humongous Mecha that he then does battle with.
