This build is rife with issues and incomplete features, and is not compatible with the modern game client. TC2 is based on the 2017 TF2 source code leak, which contained an in-development version of Jungle Inferno. TC2 is not an alternative, more stable game experience
Team Comtress 2 is a set of modifications on top of an older version of Team Fortress 2, with a community development team fixing bugs, improving performance, and adding quality of life features, with the goal of having those changes pulled upstream by Valve to the modern game.