Latest version here: https://github.com/srcdslab/sm-ext-outputinfo/
The Extension that need for Admin Room, Save Level, BossHP etc.
Special thanks for PerfectLaugh for guiding me how to compile the extension.
The original one is from here: https://gogs.botox.bz/CSSZombieEscape/sm-ext-outputinfo This extension is a modification from https://github.com/SlidyBat/sm-ext-outputinfo
There is no guarantee working on Linux platform and Counter-Strike Source.