Works with saved games. The idea is to track the stats across a single, linear playthrough, so if you use a command such as changemap you will lose all progress. Oh, and it also works in multiplayer.
To use it, bind a key in the Options Menu (default is J) to toggle the stats screen.
Requires GZDoom 3.0.0+!
Download:
http://www.mediafire.com/file/nxuxs7n91 ... Keeper.pk3


Also, here's a sample WAD for Doom 2 that displays old fashioned ACS HudMessages after clearing the Icon of Sin, just to show how the data can be passed to a map script (requires the main pk3):
Download:
http://www.mediafire.com/file/qjpdmvmpd ... atsMap.wad
