Madness

Frenzy is an extra chapter of Zombie Scenario: Season 4 in Counter-Strike Online.

Overview
Illusion consists of various bosses form Zombie Scenario: Season 4. Annihilate each Boss that comes in each round, similar to the previous extra chapters.

Bosses
Below is the list of the bosses in each round, each round also has a different guiding NPC.

Release date
Frenzy was released alongside Gilboa Carbine on:
 * South Korea: 6 November 2014.