Games like Sniper Elite III: Collector's Edition

If you finished Sniper Elite III: Collector's Edition, the closest matches are Tom Clancy's Splinter Cell: Conviction, Metal Gear Solid: Portable Ops, Tom Clancy's Ghost Recon 2, Hitman: Sniper Assassin and Hitman: Blood Money Vegas. All 6 share its shooter genre and are ranked by how closely their themes and modes overlap.