How to perform "Stinger"

[K-Nightmare-K]

Game don't explain it very well

[HOMO LUDENS]

you just push your stick in one direction twice and push attack button.

[Jetstream Sam]

Coming from the other DMC games, I struggled with this as well since the game doesn't have a proper lock-on button which is how you perform Stinger in the other games (Lock-on > Forward and attack).
like ♥♥♥♥ LUDENS said, flick the movement stick twice (fast, but not too fast) towards an enemy, then press Y/Triangle/Attack.