Half-Life 2 model in one of the new TF2 maps
a few other maps do use minor HL2 assets but they are mostly in out of bounds easter eggs like the dinosaurs playing chess in Enclosure and the HL3 easter egg in Hadal
a few other maps do use minor HL2 assets but they are mostly in out of bounds easter eggs like the dinosaurs playing chess in Enclosure and the HL3 easter egg in Hadal