Tom Clancy's Splinter Cell: Conviction is an action-adventure stealth video game developed by Ubisoft Montreal and published by Microsoft Game Studios and Ubisoft as part of the Tom Clancy's Splinter Cell series.br br Third Echelon HQ is the eighth solo campaign level in Tom Clancy's Splinter Cell: Conviction. Ex-Splinter Cell agent Sam Fisher infiltrates the Third Echelon Headquarters to access Third Echelon Director Tom Reed's office for information.br br Subscribe for more - br Follow us on:br Facebook - Twitter - br Don't forget to press the bell. Hope you'll enjoy....