Marvel vs. Capcom 3: Fate of Two Worlds

I've been able to get this using either Iron Man or Storm at the start of a match, and just hitting LT. It will go into their Lvl. 1 Hyper Combo, and if it connects, will land you the achievement. It takes a few seconds for it to pop (Sometimes, it won't pop until the next match!) but, it will indeed pop.

For this achievement you'll want to reach a Viewtiful Combo, or 31-hit combo. This is probably the basic combo you can earn without using beam user Hyper Combos. The video below will show you how to earn this 10G achievement with flare.

Also here is a list of all the other combo titles for your convenience:

3 — Yes!
5 — Cool!
7 — Good!
13 — Dude!
17 — Sweet!
21 — Awesome!
26 — Wonderful!
31 — Viewtiful!
37 — Excellent!
43 — Stylish!
50 — Fantastic!
57 — Amazing!
65 — Incredible!
75 — Mighty!
82 — Marvelous!
91 — Uncanny!
101 — Crazy!
111 — Galactic!
201 — Unstoppable!