First: Welcome to MPGH
Yes, you can play alter iw net offline.
(As lan)
I will find the link for you.
EDIT:
Here is the link:
https://alteriw.net/viewtopic.php?f=126&t=688
EDIT2:
More useful for you:
https://www.mpgh.net/forum/308-call-d...lteriwnet.html
and:
https://alteriw.net/viewtopic.php?f=72&t=33775
Now I can't help you so much more.
The mod might be old or so, I don't know...