Defeat the boss of the second page of episode 2 to get this. Dodge the fireballs that runs along the water by jumping over them (they'll come from the direction of the hand he fires from them, ie: left hand comes from the left). Duck or jump over the fingernails he fires, and try to use a powerful attack (like repeated and alternating diagonal kicks) to knock him into them.
To make this really easy, try saving some dynamite or a power fist if you're lucky to get one by the "?" that Roadkill sniffs out in the second panel of the second page. Just save before you pick it up and reload if you don't get the power fist.