Onslaught Ending Explained: What Happens To Celeste?

Onslaught Ending Explained: What Happens To Celeste? Static Media Contains spoilers for "Onslaught" Adam Wingard's "Onslaught" is a kind of pre-Halloween punch bowl of flavors — part slasher flick, part '80s action throwback, part dark comedy, part modern military thriller.