RE4: killer of a classic?

[Dimnos]

Its been a long time since i have played it so i dont really remember all that well. I remember something about poison but i thought you still had to fight it somewhat. I looked on youtube for "resident evil knife run" and they have part one to ten. However part ten ends with killing the snake (2nd fight with the snake), again its been a while and my memery sucks, but i think that is before you even leave the house. So it doesnt even show you the plant boss or tyrent.