Place this clip just before the betrayal lands in a gameplay edit, then follow it with enemy spotted for the chase and bomb has been planted to close the sequence on a team objective gone wrong.
About this sound
This is a short 1.5-second voice clip of Wheatly cheerfully announcing this is the part where he kills you. The delivery feels gleefully menacing and darkly funny, because the threat is stated so casually and politely. It lands as a playful betrayal moment rather than a serious one.