EARLY HINTS
0) X-Men (2nd series) #25
1) Uncanny X-Men (1st series) #322
2) X-Force (1st series) #46
3) X-Men (2nd series) #46
4) X-Force (1st series) #52
5) X-Men (2nd series) #49
6) X-Men (2nd series) #50
PROLOGUE
7) Uncanny X-Men (1st series) #333
8) Excalibur (1st series) #99
9) X-Man #15
10) X-Man #16
11) X-Man #17
12) Cable (1st series) #32
13) Cable (1st series) #33
14) X-Men (2nd series) #53
15) X-Men Unlimited (1st series) #11
16) Uncanny X-Men (1st series) #334
17) X-Men (2nd series) #54
18) Onslaught: X-Men
PHASE & IMPACT 1
19) Uncanny X-Men (1st series) #335
20) X-Man #18
21) X-Force (1st series) #57
22) Cable (1st series) #34
23) Incredible Hulk (2nd series) #444
24) Avengers (1st series) #401
25) Excalibur (1st series) #100
26) Fantastic Four (1st series) #415
27) X-Factor (1st series) #125
28) Generation X #18
29) Wolverine (2nd series) #104
30) X-Men (2nd series) #55
PHASE & IMPACT 2
31) Uncanny X-Men (1st series) #336
32) X-Factor (1st series) #126
33) Cable (1st series) #35
34) X-Force (1st series) #58
35) Incredible Hulk (2nd series) #445
36) Iron Man (1st series) #332
37) Avengers (1st series) #402
--) Punisher (3rd series) #11
38) X-Man #19
--) Green Goblin #12
39) Fantastic Four (1st series) #416
40) Generation X #19
--) Amazing Spider-Man #415
41) Wolverine (2nd series) #105
--) Spider-Man #72
42) X-Men (2nd series) #56
43) X-Men Unlimited (1st series) #12
EPILOGUE
44) Onslaught: Marvel Universe
45) Uncanny X-Men (1st series) #337
46) X-Men (2nd series) #57
47) Onslaught: Epilogue
Do u have to read all those I just want the main story