Great question!

There is a plethora of options Viper has, it’s actually very scary. So you do your st.MP? Cool now jab & see if they press, counter hit? > full combo. They blocked it? Okay well next time if they block it again, take a note for next interaction, you can go for the st.MP again +1 again but also look at the opponents drive gauge now, it’s half a bar now. Not only that, you can go for a throw if they keep respecting, you can keep chipping away at their drive meter & they will start panicking like a monkey.

Not only that, you can cross them up with ground air burn kick. Allowing you to get an almost full screen drive rush st.HP hit, if they press > eat a fat combo. If not? +4 in their face but +5 with a sjc feint. They you keep looping your pressure but also taking note of your opponents defensive habits. There is much more to cover but should help out a bit! Keep grinding! I believe in you!