This Can Be Accomplished In Classic Any/ All.
You Need A Transporter OR A Witch In Your Game To Net This Achievement.
- A Transporter Can Switch You And Your Target, Making You Target Yourself.
- A Witch Can Make You Target Yourself
Easy Way
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If Someone Said They Are Transporter, Shoot Them A Whisper
- Tell Them You Are Mafia Killing Role And You Want To Hit Yourself, "So Target Yourself And Me".
Organic Way
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The Any/All Playlist Is Your Best Bet, As You Can Get A Few Transporters In The Same Game.
OR
Announce You Are Vigi And Hope The Witch Exists And Make You Target Yourself Instead Of Another Random.
If You Successfully Get Switched, You Will Shoot Yourself And The Achievement Will Pop At The End Of The Game.
*Please Note*
- Commiting Suicide Over Guilt From Shooting A Town Member, Will Not Net You This Achievement.
- This Achievement Appears To Be Glitchy And May Have To Be Done Multiple Times For It To Pop, However In My Experience, It Popped The First Time No Problem.
Good Luck!