MRSEN Patch 2.0 file
The start map is : ,,MainMenu If you have the Hello Neighbor: Old Art Style Content Pack (Extended) by RandomPerson189 not installed, then the textures will not be displayed from the (old art models) My english is not the best.
Hello Neighbor Old Art Style Content Pack Mrsen Mod For Hello Neighbor Rsen Patch 20 Evelopment Tools
Source: moddb.com