Place it after a fake ending in a boss edit, then follow it with the enemy spotted sound button when the next threat appears, or lead into a jumpscare reveal for the returning boss moment.
About this sound
This clip is an eight-second voice line of Councilor Vay Hek delivering the warning 'do not think we are done' in his loud, ranting boss style. It feels threatening and defiant, like a villain refusing to accept defeat. It comes from Warframe, where Vay Hek is a Grineer councilor and recurring boss.