Irradiated
Irradiated Zombies now explode 1 second after being killed, this has new VFX and audio.
The Radiation explosion does half as much damage as previously
The Radiation explosion radius has been increased from 175cm to 250cm
Melee weapons are now possible on Weapon Roulette during Irradiated waves.

Burning
Burning Zombies have brand new VFX

Electrified
Electrified Zombies have brand new VFX

Spectral
Spectral Zombies have brand new VFX

In Case You Missed It...
These are the key hotfixes that were made during last update.
Cursed Waves
Every 10th wave from Wave 50, there will be a Cursed Wave, where every zombie is cursed
The higher the wave, the higher chance that the cursed zombie will be a special type. This chance is wave number ÷ 10 per type
Added a new Achievement "Curses!" for surviving a wave of Cursed Nasty Zombies
Cursed Zombies are immune to Vengeance
Cursed waves have half the amount of zombies to kill
The Shifter Rework
Shifter now kills all zombies between the start and end point of your teleport.
Shifter cooldown is now 15 seconds + 1 second per meter travelled
Activating Shifter now cleanses all negative effects
The Zephyr Rework
The Zephyr now has 3 charges of 5 seconds, instead of a single 15 second use. These can be stacked all at once up to 15 seconds. These 3 charges replenish each wave.
The Zephyr no longer has a 60 second cooldown
Additional Changes
Added a new floor to the Backrooms
Noclip walls in the Backrooms wobble to give a visual indication that it is not a normal wall
The Pride Tome now enlarges zombie heads & increases headshot damage by 2.5x
You can now use the Mystery Box in Weapon Roulette, but you can only take equipment from it