クリスはヴァンパイア・ナイトを倒した！

grease

topic marker particle; indicates contrast with another option (stated or unstated); adds emphasis

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

to throw down; to bring down; to blow down; to fell; to knock down; to set (something) down on its side; to turn (something) on its side; to kill; to defeat; to beat; to overthrow; to trip up; to ruin; to leave unpaid; to cheat