Here's a list of what i'm currently missing - if someone has/know where i can get one of these, i'd be more than happy.
1 Thor (T1)
2 Loki (T1)
5 Wolverine
7 Red Skull
9 Thing
10 Captain America (Avengers)
11 Iron Man (Avengers)
12 Thor (Avengers)
13 Hulk (Avengers)
14 Nick Fury (Avengers)
16 Loki (Avengers)
22 Dark Phoenix
23 Iron Man (IM3)
25 Iron Patriot
26 Iron Man (Space Suit)
27 Phoenix
28 Logan
30 White Phoenix
31 Red Hulk
31 Red Hulk (Metallic Variant)
32 Tony Stark
33 James Rhodes
34 Peter Parker
38 Thor (w/ Helm, TDW)
39 Hulk (Red & Green)
40 Wolverine (w/o Mask)
89 Unmasked Cyclops