I did that with a level 1 halfling-like* character in my first ever D&D play session. Okay, my character didn’t “fly” the enemy off a “cliff,” but he hurled himself at it and knocked it off a roof. Almost took another player out too, when the rope he was using as a climbing harness swung around, LOL.

(* It was a blue underground race from “the blight” setting that I can’t remember the name of right now.)