First of all, tick Load textures on demand and pixel shader on. Then once you are in the main menu, press to battle, create your own character then press Join. (Press Host if you want to Experience MP SP Invasion mode, beware this mod is not made for playing alone as its insanely hard to do solo)
If this is your first time. do not tick the box server filter, then press Internet at top, then press internet again, let the server list to run, when it stops, press Mod, then scroll down until you see mod starts with F, all Full Invasion2 servers is there
This is how you do it, first you 'Create' your game character, then you press 'Join a Game'. Then you press Internet at top, then press Refresh, it will take awhile to load so let it. After its loaded a bunch of servers will appear, wait till it stops at ....(32) then scroll down, sort servers by names, then all Full Invasion 2 servers are there. it is really simple, not hard at all
Sometimes there is a bug where it will not show any servers up, this can be fixed if you press Internet, then press Internet again in the server filter, let it refresh, also make sure you close down all browsers.
*To those who is using a wireless connection, you may find it very difficult to find servers because wireless can cause some problems, try use a wired connection instead to boost performance + chances to find more servers.
(if you have v0.10 and join v0.115 server you will crash instantly)
Offcial servers like Offcial and Offcial NA are much more updated with updated maps.