can you play with friends with hamachi?

[Guins]

instead of portforwarding

[Resxt]

Guins yes your friends will have to use connect Host_Hamachi_IPv4 in the console while the host is in game to connect. For example connect 25.125.32.200

Note that we don't recommend doing this as it makes you depend on another software + if you don't have a stable connection or if you're using Wi-Fi it can introduce lag.
But if you want to use it it will work yes

[Guins]

Resxt do i need to enable upnp? im in my router settings but see nowhere to turn it on.

[Guins]

Resxt its already enabled but plutonium says its disabled

[Resxt]

Guins The point of Hamachi is to remove any network condition (UPnP/port forward etc.) so ignore UPnP.
And by the way, UPnP's goal is to open a port (port forward) https://plutonium.pw/docs/custom-games/#what-is-upnp