The Vex Network
After you’ve reached 100% progress, the conflux will disappear and a wormhole will spawn. Players need to travel through it to arrive inside the Vex Network. This is an extremely trippy and psychedelic location, one that might just remind you of the Tron-like area in the Prophecy dungeon.
Getting past the obstacles
Slide down and you’ll discover that there’s a huge gap. Some of the platforms will also disappear, but you can interact with the green panel if you have the “Codestrider” perk from the Splicer Gauntlet.
Likewise, you’ll notice traps such as laser walls (like the Resident Evil movie) and spinning laser poles (akin to the ones from Super Mario). It’s going to be a doozy, but, hopefully, you or a teammate can make it through.
Tacitas boss fight
Once you reach the next chamber, you’ll fight Tacitas, Subjugated Mind. This boss is actually quite a chump, but there are some extra mechanics that you’ll need to be aware of during the fight.
For instance, each time you take out a third of Tacitas’ health bar, it’ll be shielded and three floating boxes will spawn. If you eliminate the Scytale mob that appears, as well as other enemies, you can destroy the boxes to remove Tacitas’ immunity. Continue nuking the boss until it’s dead.
Conflux chest and Ether
Two chests will spawn once you’ve beaten the boss. The regular chest drops, er, regular loot. Meanwhile, the Conflux chest (the one with the green symbol) drops seasonal gear. However, you do need to have an Ether Key Code.
Ether is obtained normally by killing mobs anywhere in the system. As for the Key Code, you can craft these by right-clicking on the Splicer Gauntlet in your quest tab (50x Ether per key). In a way, it’s like spending Hammer of Proving charges to acquire rewards.