From Guild Wars 2 Wiki
“Fire a blast so strong it launches your foe as you fall backward and cures immobilized, crippled, and chilled.
— In-game description [?]
- This fast, efficient interrupt is useful for both offense and defense. Though it comes with a large amount of recoil, it launches targets and gives the engineer a positioning advantage while creating a large amount of distance. Once the target is knocked down, the engineer has a second to attack from range or close in with Jump Shot. As a further bonus, it cures a variety of movement-impeding conditions whether it hits or not.
- If the engineer has Stability in effect, the self knockback effect will be canceled.
- If Overcharged Shot is Reflected, the launch effect intended for the target is also reflected, resulting in a knockdown-launch combo for the engineer.
- Postitional awareness when using this skill is important, as engineers can end up knocking themselves off ledges. However, it is impossible to launch an enemy off a ledge, due to a game mechanic.