The tentacle.avi file you have requested: Media / Videos and Trailers / User Videos / May 2011 / Half-Life - Tentacle Model Demonstration - 326.5kb 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:
A 360-degree demonstration of the Tentacle model. A 360-degree demonstration of the Tentacle pre-release model.