hi for the multiplayer we need to devellop an app or a plugin to make it work cause the engine is hard coded for singleplayer (logic) but thats the hardest thing cause we need to mod the game too for adding two spawnpoints, synced cinematic, a respawn logic like if one dies it ends the game or adding a rez method could be possible... etc etc, for the nightmare mode its basically impossible cause we cant import assets yet so your best bet is to do a custom campaign in the zombies mode instead and its clearly not impossible but limited, and lastly im creating a mw3 style survival for the missions strike force rn but its still in alpha phase cause the strike force gamemode is buggy but the fact we are not has limited as multiplayer or zombies i can basically create a warzone (i added a horde of 8claws in the last wave pluse 16agr and 48soldier on veteran difficulty and the game didnt crash or even had fps loss a all lol) so im working on it rn and if you want i can send you the mod if you wanna play it before i post it online
