You're Frodo, a level 1 hobbit. Don't worry, this is pretty easy.

You and Sam at the crack of doom - Gollum has just bitten off your finger and the ring. You and Sam are fighting him. Normal attacks do not seem to harm him at all.

What you do is:
lure Gollum to the edge
do rapid hits to get him off balance
bash him to knock him off
finishing move to get him down

You have to do this combo several times - end of game!!!

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