Bon voyage is French for good trip, but since we don't really care for the French, it pretty much means adios mother@@%##. But you guys already know what this is really about—the "Bon Voyage" schievement in BioShock: Infinite. This trophy is relatively easy and asks you to kill 20 enemies by knocking them off Columbia.
Since Columbia is pretty much a giant floating city, this shouldn't be too much of a problem. You can use a powerful gun with good knock-back, like a shotgun, or you can use the Undertow vigor to blow baddies off the map. So, pick you poison and start sending those guys flying.
Check out the guide for some more hints below.
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