I was trying to get i2p working without the need to allow UDP and other things in my firewall, I managed to connect to some nodes but its not enough to make it works.
Thus a noticed lots of services relies on UDP to works, as Freenet and others, as I just allow outgoing through Tor bridges in the firewall, those services cant work for me.
I have found this link[0] talking a bit about using UDP over Tor, it seems to be (you -> tor -> riseupvpn -> udpservices) but I dont even tried yet, some of you have tried this one? What about another methods?
0 https://www.whonix.org/wiki/Tunnel_UDP_over_Tor
>picture is NSA art