IWAD - doom2.wad
PWAD - tnt.wad napalm.wad 
Type - UV (skill 4) Maxdemo
EXE  - glboom-plus -complevel 2 (Doom 2 v1.9 compatibility)

Kills  -  100%
Secrets - 100%  

******************
Time  * 16:18 *
******************

This demo plays back correctly only with Doom2-Plus or with the latest PrBoom-Plus 2.4.8.2.
You can grab prboom-plus 2.4.8.2 from here:
http://prboom-plus.sourceforge.net/history.html

Examples:
glboom-plus.exe -iwad doom2.wad -file tnt.wad napalm.wad -complevel 2 -playdemo npl-1618.lmp
doom2p.exe -file tnt.wad napalm.wad -playdemo npl-1618

Author:  Andrey Budko