The vengeance.zip file you have requested: Maps Levels Missions / Single Player / U to V Titles / Vengeance - 16.05mb is not available. Perhaps try browsing all files for the game Half-Life and upload any files you want to share or are missing. This is the only information we could locate:
// HALF-LIFE SPEECH SYSTEM SENTENCES. DO NOT MODIFY THIS FILE! Max of 1023 sentences.
SF1 scientist/ahfreeman, howinteresting, headcrab, fascinating
SF2 barney/ba_watchit, ba_whatyou
// HUMAN GRUNTS
HG_GREN0 sentences/HG_GREN0 A pack of 24 maps plus one bonus. Has about three hours of gameplay.