Fred Perry's Gold Digger, issue 118. Julia's student/almost son is fatally wounded by a ninja. She is not happy.
Not sure if these exactly count but at their core, Inferno, X-Tinction Agenda, and (ugh) X-Cutioner's Song are revenge stories. If I didn't make my opinions clear, only the first two are worth reading though good luck collecting all the Inferno issues unless you want to shell out for two hardcover omnibuses.
Inferno-Madelyn Prior seeking revenge against Cyclops, Mr. Sinister, and the human race in general. S'ym gettig revenge against Magik. The Bogey Man getting revenge against Power Pack, Graviton attempting revenge against the Avengers, Typhoid Mary gathering Daredevil's entire recent rogues gallery (with the exception of Bullseye) for revenge.
X-Tinction Agenda-Cameron Hodges mad revenge plan against the X-Men and all mutants.