Introduction
Akuma has close to the worst vitality in Marvel, so it is very important that you not get hit. If you get hit, you will die. He is most useful with his Y-assist, but he can also charge fairly quickly by super-jumping and either mashing on his Fierce or throwing many fireballs as you descend.
Colors
First row: LP, HP, A1. Second row: LK, HK, A2.
Moves List
Normal Moves
Command normals
Zugai Hasatsu: f + hp overhead
Senpuu Kyaku: f + hk
Senpuu Kyaku: air u + hk
Mae Geri: air u + mk
Special Moves
Fireball (Gou Hadouken)
qcf + p
airok
Dive Kick (Tenma Kuujin Kyaku)
qcf + k
aironly
Dragon Punch (Gou Shoryuken)
dp +
Ashura Warp
dp or rdp + 
or 
or 
N/A
Hurricane Kick (Tatsumaki Zankuu Kyaku)
qcb + k
airok
Command Throw (Jigoku Gurma)
hcb + hk
throw
Super Moves
Super Fireball (Messatsu Gou Hadou)
qcb + lp + hp
Super Dragon Punch (Messatsu Gou Shouryuu)
qcf + lp + hp
Super Rising Hurricane Kick (Messatsu Gou Rasen)
qcf + lk + hk
Air Super Fireball (Tenma Gou Zankuu)
qcf + lp + hp
aironly
Raging Demon (Shun Goku Satsu)
lp , lp , f , lk , hp
unblockable (requires three levels)
Assist Moves
Name
Damage
Cross-Over Combination
Alpha Counter
Notes
Fireball Super Fireball
Fireball
Dragon Punch Super Dragon Punch
Dragon Punch
Hurricane Kick Super Hurricane Kick
Hurricane Kick Great to combo off of.
The Basics
cLK, hurricane kick, tenma gou zankuu
You can generally combo hurricane kick into tenma gou zankuu anywhere, such as part of an air combo.