| Issue | #34 |
| Published | June 1989 |
| Cover Price | 1.25 USD; 1.75 CAD |
| Pages | 36 |
| Editing | Bob Harras; Daryl Edelman (assistant editor); Roger Stern (original material) |
| Genre | Superhero |
| Pencils | Steve Lightle |
| Inks | Steve Lightle |
| Characters | Banshee |
| Genre | Superhero |
| Pencils | Steve Lightle |
| Inks | Steve Lightle |
| Characters | FEATURE: X-Men--Cyclops; Phoenix [Jean Grey]; Storm; Wolverine; Colossus; Banshee; Nightcrawler; GUESTS: Moira MacTaggert; Havok; Polaris; VILLAIN: Proteus [as Joe MacTaggert; Death]; CAMEO FLASHBACK: Magneto; Multiple Man |
| Synopsis | It's the X-Men vs. Proteus to the death. |
| Genre | Superhero |
| Script | Chris Claremont; John Byrne (co-plotter) |
| Pencils | John Byrne |
| Inks | Terry Austin |
| Colors | Glynis Oliver |
| Letters | Tom Orzechowski |
| Reprinted | from X-Men (Marvel, 1963 series) #128 |
| Characters | Hellfire Club |
| Genre | Superhero |
| Script | Ann Nocenti |
| Pencils | John Bolton |
| Inks | John Bolton |
| Colors | Glynis Oliver? |
| Letters | Joe Rosen |
| Reprinted | in Marvel Miniserie (Marvel Italia, 1994 series) #32 |
| Characters | Cyclops; Phoenix [Jean Grey]; Storm; Wolverine; Colossus; Banshee; Nightcrawler; Moira MacTaggert; Polaris |
| Genre | Superhero |
| Pencils | George Perez |
| Inks | Terry Austin |
| Letters | Dan Crespi |
| Reprinted | from X-Men (Marvel, 1963 series) #128 |
| Genre | Superhero |
| Pencils | John Bolton |
| Inks | John Bolton |
| Notes | Back Cover |