The RetrovirusAlphaDemoSetup.zip file you have requested: Official Demos / Retrovirus Alpha Demo - 465.63mb is not available. Perhaps try browsing all files for the game Retrovirus and upload any files you want to share or are missing. This is the only information we could locate:
The demo features roughly twenty minutes of campaign gameplay, playable solo or in co-op. In addition to the campaign gameplay, the demo also features three levels playable in mulitplayer. Retrovirus is a six-axis shooter in the style of Descent, with visual inspiration from worlds like Tron and ReBoot. In Retrovirus, the player takes on the role of the antivirus agent, fighting off a host of invasive viruses with the fate of the home system in the balance. The game features fast paced retro shooter combat, a deep weapons system complete with tactical scanning, and a dual-layer story that lets the player figure out the virus real world origins.