from what ive noticed from play the flood, covenant, and insurrectionists are implemented as factions yet. and the enemies themselves are still very WIP. That said, the unsc stuff is functional and works really well, so until theyre fully implemented i recommend using the mod along side something like the deadspace or aliens mod to add a more terrifying experience. RP as the UNSC with unspeakable horrors is extremely fun. Though i havent had alot of success in finding ppl interested, so if you do have a play session with those mods please let me know as they are some of the most fun ive had in barotrauma. Also destructive roleplay works well too, like having traitors and leaving necrotic blood in vents on the ship tend to make the mood more tense or using console to spawn enemies occasionally when theres a long period of nothing.