If you have a SKULL-9, combine it with Mach Booster and Stun Particle to deal fatal damage against the others. A direct hit will kill Riflemen and Hectors instantly (make sure you have upgraded all the abilities first before hunting Hector).
Shotguns are the suitable weapon for this class, especially the Volcano.
Use the Charge ability to escape from Targeted Plasma Bombs from Riflemen or when you are stunned due to a Tanker enemy.
Tactics when facing a Tanker user
Avoid going directly to him as you are giving a way easy to shoot you.
Targeted Nuclear Bombs are the best way to deal with them.
Get back to your base if you are surrounded by Tankers.
These weapons are usable by the tankers:
Tanker can be equipped with M134 Minigun (including its variants), a knife or Shotguns.
The most suitable weapon for the Tanker is the Gatling, because it has epic damage and the Tanker can run while using it.
The Counter-Terrorist's Tanker resembles the Titan when it is wielding the M134 Minigun.
This character is not available for Singapore/Malaysia, Indonesia, Vietnam as well as Counter-Strike Nexon: Zombies, because Meta Arena is not released in those regions.