Detailed official information regarding these changes can be found in the v3.4.0 Patch Notes on Brace Yourself Games or via the Steam Community Announcement. Patch v3.4.0 - Brace Yourself Games
The centerpiece of the v3.4.0 update was the addition of as a playable character for all platforms. Previously a Nintendo Switch exclusive, Reaper's mechanics revolve around a unique soul-collection system: Crypt.of.the.NecroDancer.v3.4.0 (2).rar
Beyond new content, v3.4.0 focused on technical stability and balancing: Detailed official information regarding these changes can be
: The update significantly optimized Soul Familiar movement and tile attack checks to reduce lag spikes when many entities were on screen. : When Reaper defeats enemies, they release souls
: When Reaper defeats enemies, they release souls that transform into familiars to fight alongside her.
: Hundreds of minor issues were addressed, such as fixing errors when the character Chaunter possessed certain enemies and resolving visual glitches in the level editor.