With Ryu out:
(only in the corner) After any combo ending with a donkey kick, if you do 5A, 5B, 5C, 6C, 214C (tatsu) you can use Yatter2’s assist to create some different options.
If you hit the assist at the same time the 3rd kick of the tatsu lands, Yatter2 will poke the opponent just high enough for you to walk under and reset combo. Also note if they get used to this you can walk only a few steps forward and they will fall back into the corner, leaving you on the same side. You can also overhead after the reset into a BBQ combo if you have the red life of course.
If you hit the assist just before the 4th kick of tatsu, you have enough time to land and combo with another 5A, 5B, 5C, 6C, 214C into either Shinkuu or Shin Shoryuken.
Also after a Shin Shoryuken (in the corner), if you wait a bit, you can get an assist with Yatter2 followed by a 3C into an aerial combo. If they’re not in the corner and you land a Shin Shoryuken then you can dash up twice with 3 (3ABC) and use Yatter2’s assist then for the same thing.
With a little bit of red life, you can kill someone with full life with this combo:
j.C 5B, 2B, 5C, 2C, 6C, 421C, 5B, 5C, 6C, 214C, P, 5A, 5B, 5C, 6C, 214C, BBQ, 5A, 5B, 5C, 6C, Shinkuu then before he shoots the hadoken DHC into Ai’s lvl 3.
I also think you can do Ryu’s lvl 3 instead of Shinkuu, relaunch with 3C into j.A, B, 236A Shinkuu but I keep failing after the relaunch lol.
With Yatter2 out:
You can keep mad pressure on the opponent by doing 5A, 5A, 5B, 5C 236A P(Ryu Assist) then B or C depending on how they are blocking. If you land the overhead or low then the assist will land very soon after giving you enough time to combo in 5A, 5C, 3C (I think 5A, 5C are the only normals you can get in before you are out of range for the 3C. If anyone finds something else you can land that does more damage let me know.) into an aerial. After the aerial, if they are in the corner I believe you can get an OTG 236A C. Once they get up you can just start the 50/50 all over again. I’m not sure about this but I think you can do Omotchama’s Roll after you land from the aerial with enough time to meaty the 5A.