Easiest way to beat the guy with the Knife in RE4 Wii in story 5-3?

[TWRoO]

crazynarutard said:
finish the game and use the handcannon fully upgraded.

you need to get 5 stars on all characters in mercenaries [unlocked when you finish the game once] for that, its worth it though even though getting 5 stars on waterworld with leo is tough.