With 5 (and eventually more) different enemy fronts we have to face, at some point we're going to eliminate one of these races either to the point that they are no longer a threat, or until none remain. So, who do we think will take the most time to finally put down? [spoiler]Note: This doesn't mean the most dangerous race, just which one would be capable of lasting till the end.[/spoiler] [b]Fallen:[/b] We've decimated the Fallen enough to where Pre-Red War they shouldn't have been any more of a minor threat, but afterwords they've begun to become more of a pest. It's implied that multiple Fallen Houses have joined together to combat the Red Legion, including the House of Kings, so it's safe to say that they can still put up a fight if necessary. With Forsaken coming up and the Scorn lore slowly surfacing, the Fallen are less of pirates and more like space cockroaches. [b]Hive:[/b] Probably the only race capable of taking Guardians in a head on fight and winning, the Hive's sheer numbers and the strength of their Ascendants makes them extremely formidable. Even after killing off Oyrx's entire family sans his siblings, and even slaying a Worm God, the Hive haven't shown any sign of slowing down. With Savathun being heavily implied to be the next major Hive enemy taken out though, we can assume, but cannot properly predict, that they'll stay down longer if she's slain. [b]Vex:[/b] We know lots about the Vex yet almost nothing at the same time. For trans-temporal murderbots with planetary sized reality warping engines, there's a reason why we can't easily wipe them from existence and vice versa. We've slayed the Black Heart on Mars to lock out their potential paracausal natures, ruined their reality bending testing ground known as the Vault of Glass, and later ruined their planetary prediction engine by deleting Panoptes. Unlike the Hive though, we have no idea just how high their Axis commanders go, their exact origins, or if we've made any legitimate dents in their army beyond D1's vanilla campaign & raid. Since this race was capable of holding their own in the Hive's Ascendant Realm for seemingly centuries, they're certainly a threat till the end. [b]Cabal:[/b] Though generally big, tough, and stupid, the Cabal aren't a threat for just their brawn alone. They are cunning enough with the right commanders in place to even take down the City with a surprise ambush as seen with the Red Legion. Calus, being the former emperor of the Cabal, is another example of their surprising intelligence, being capable of crafting and maintaining large destructive devices such as the Leviathan and the Almighty and knowing of powers beyond the Traveler's reach. We don't know too much about their current hierarchy or their overall size of their army, but being the only natural enemy comprised of multiple races (Psions, War Beasts, etc), they're certainly capable of lasting if we don't take any fights to them. [b]Taken:[/b] Being directly corrupted by the Deep itself in some still relatively unknown method, the Taken can be created from any former race in large quantities by those that can Take, either through the Tablets of Ruin or some other possible method we have yet to see. Since only the original members of the Hive (Oryx, Savathun, and possibly Xivu Arath) can currently use this power, it's implied that the Taken will only diminish once the Hive is exterminated, as far as we know of course. [b]Other:[/b] There are still other races/factions currently out there that are our enemies, but we don't know enough about them atm so see how long they'll be around. The Scorn, the Pyramid ships, the Shadows of Yor, possibly even The Nine are all possible or confirmed factions to face later down the line. How long they'll last though is up in the air so far. Feel free to discuss which race will make it to the endgame with us. Personally, I think the Vex have the best odds so far by looking at how little we know of them despite 2 game's worth of lore.