Exactly like Ryu and Ken pronounce it in the original game. Ha-doo-ken! Emphasis on the doo. Repeat until your best friend is dead and calls you a cheater. Move on to Mortal Kombat knowing full well you’re picking Scorpion…
Edit: Hadouken spam for reference.
Feels like I’m wearing nothin’ at all! Nothin’ at all! Nothin’ at all!