Pull! is an achievement for the Xbox One and Xbox 360 for Titanfall. This is earned by killing ejecting Pilots (also known as "Goosing") 10 times. An ejecting pilot is a Pilot that has ejected from their titan but has not landed or started wall running. Therefore, a player will make progress earning this in-game, as killing an ejecting pilot is actually the Gooser challenge. This achievement will reward 25 gamerscore upon completion.
A similarly-named achievement, Pull Harder!, requires the player to goose a Pilot using the PR-01 Plasma Railgun.