The "Convergence" update completely overhauled the game's structure to support cooperative play:
Included massive updates to zone layouts and lighting across multiple chapters, specifically improving underwater areas and ground textures. Last.Epoch.v0.9b.Early.Access.part2.rar
Significantly improved the performance of the minimap, overlay map, and various particle effects for skills like Hungering Souls and Volatile Zombies. Notable v0.9 Gameplay Mechanics Added highly requested affixes, such as "Increased Area
Major balance passes were made for classes like the Rogue (Marksman) , adjusting critical strike vulnerability and damage-over-time (DOT) effectiveness. Enabled parties of up to four players to
Added highly requested affixes, such as "Increased Area for Area Skills" for gloves and amulets.
For further official details or troubleshooting, you can check the Last Epoch Forums for the full 0.9 patch notes. Last Epoch's MASSIVE Patch Notes for 0.9!
Enabled parties of up to four players to quest, run dungeons, and tackle the Monolith of Fate together.