He watched sword and board slip on the oil while charging, which made his job easier. He deflected Flynn's attack, and then shifted to the side, letting Flynn get past him and at whoever was behind him. He then turned and simply overpowered the rat, a powerful horizontal swing followed up by a palm strike to the chin, which should knock him off the platform. He then turned to sword and board, and used his sword like a pole to push him off the platform, the oil making it immensely easier. The Summer Knight then turned and checked to see what had become of Flynn.