• Fixed interactions with VJ NPCs as of VJ Base 3.0.0.
  
• Zombies are now more optimized in general behavior.
  
• Fixed a Lua error which could happen upon player death.

• Reverted the step height change from Hotfix 3A, fixing zombies stepping partway through low ceilings.
  
• Fixed a Lua error caused by breaking a virus sample without JMod enabled.
  
• Fixed a Lua error caused by zombifying ragdolls without a valid physics object.

Community-contributed JMod compatibility fix.

• Fixed the Infected Combine sounds always being replaced with the non-ep1 content.
  
• Easter egg spoiler: Fixed Maggot Mode enabling itself without TF2 mounted, resulting in the disgraceful sight of Soldiers who do not scream.

• Sounds that come from mounted content (combine sounds and vial break) will be substituted if the appropriate content is not mounted.
  
• Crawling zombies now drown in shallower water.
  
• Step height for zombies greatly increased, allowing zombies to scale most of the same obstacles as players. (This may cause problems.)
  
• The Horde Spawner will try not to spawn zombies inside of objects.
  
• A few optimization changes.

• Fixed a null entity error during target scanning.

Fixed the ba2_inf_inherithealth convar.

• New infection convar: "Inherit Health" - makes risen zombies have the same max HP as the NPC or player they were created from. On by default.
  
• New client convar: "Low Performance Gibs" - gives gibs a more compressed texture to improve performance.

• Gib response changed - now based on the final hit's damage instead of the difference in health. This will make gibbing less common and more satisfying.
  
• New unstuck solution: zombies will reduce what they can collide with when they become stuck.
  
• Special gib effect for chest shot kills.
  
• Increased zombie maximum attack range.

• Fixed zombies getting stuck on players and each other.
  
• Fixed virus samples not creating decals when destroyed with damage.
  
• Fixed a Lua error that can arise when a zombie grabs an NPC.
  
• Sound/model precaching now works properly.
  
• Zombie corpses are removed correctly again.
  
• Fixed zombies taking extra damage from a broken limb.

Hotfix for Lua error when deleting zombies

• New convar: ba2_cl_zomdecals, which toggles blood decals on zombies
  
• New torso gib system
  
• Removed eye gibs from headshot effect
  
• Headshot damage multiplier is now 4x again
  
• Fixed spawner zombies not deleting themselves correctly when stuck
  
• Fixed zombies fidgeting when stuck
  
• Fixed zombies not walking straight to corpses
  
• Fixed several Lua errors