It can be useful to inspect information from built Unity players. This can be helpful to check whether a certain DLL is used by the game, or verify that the player built properly.
Find this information in:
unity default resources
UnityPlayer.dll- Properties / Details / File version
These methods work even with IL2CPP builds.
global-metadata.datwith a hex editor.
global-metadata.datappears to contain all the method/property/field names in UTF-8 (or at least those that were used and not stripped) from all the assemblies that were used by the build.