Originally Posted by Teh Paralyzer
A Rock and a Hard Place 50
Outmaneuver the rampaging beast, El Gigante.
At the crossroad where you must pick Right (El Gigante) or Left (Bella Sisters). Pick the Right route and escape El Gigante as fast as you can.
I'm not sure about this, but this achievement sounds like you have to defeat him the first time you are forced to fight him. I could be wrong, tough...