Got it from here at first
https://forums.alliedmods.net/showthread.php?t=249422
But the models were buggy, then I got somewhere else that I couldn't find the official link.
All I did was register the points for the entities to spawn and set animations on each one and of course, the messages and effects since the original version only had a menu that plays the animations and thats it.
The pain in the ass is that it is needed to register manually each map.