Hi SonOfaHaduken, and welcome

The "rick roll" files as I remember them should be straightforward to install.
The "rick" character goes into your "entitybank" the script goes into your "scriptbank\people"
folder, and lastly I recall a wave (sound) file. That should go into your "audiobank" somewhere.
I do seem to remember something about that audio file being pulled ??? (copyright issue or something)
Once added, just bring the "Rick Roll" character in from Entities, then right click it and make sure under
Property Settings the "AI Main" it's pointing to the correct script. Then test run. Walk up to character
and he should start dancing & singing

best
My games never have bugs. They just develop random features..
Lots and lots of random features...