The ELEsetup.exe file you have requested: Maps Levels Missions / Single Player / E to F Titles / Extinction Level Event - 6.35mb 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:
Extinction Level Event is a single player addon pack for Half-Life. We have a new weapon, and a few new characters. Have fun with it. Version 1.2. Fixes some small map bugs.