Well, I agree with Avaritia Aurorus, is a really easy achievement to do in local multiplayer.
I just did it, it took me 1 minute and I'll tell you what I just did.
Go to Multiplayer -> Local
Player 1: Select Ken
Player 2: Select Ryu
Now make Ken walk next to Ryu and hold both controllers, player 1 with left and player 2 with right.
Now here's the trick: Press A (low kick) with controller 2 (Ryu) at the same time you press -> with controller 1 (Ken).
If you do it correctly, Ryu will kick and Ken will parry. This takes less than 1 second of your time. Do it 74 more times and you're done!
Thanks for the feedback.