Obiettivi di Herald of Havoc

Beat E1M1 in Havoc difficulty

Finish episode 1

Beat wave 10 on Endless mode: Proving grounds

Beat wave 10 on Endless mode: Arena

Find the super secret in E1M6

Kill 12 enemies under one second with the Runeblade

Kill every enemy and find every secret of episode 1

Finish E1M6: Ghost town, without getting damaged by anything in any difficulty (damage fully absorbed by armor doesn't count as damage)

Fire the Shock Rifle and make the lightning bounce out of 12 enemies at once

Fire the Shock Rifle at a dead body to use it as a conductor in order to kill an enemy

Beat E1M3 - Secret Weapon... without collecting any weapons... (only use Runeblade and Blaster)

Beat E1M1 under 30 seconds

Have Akimbo and HAVOC powerups at the same time

Resurect a Pyro with the Soul Reaper

Control 20 or more zombies at once with the Soul Reaper

Burn 6 enemies at once with the Blaster's secondary fire

In the blue key room of E1M5 - Halls of Knowledge, kill the Metal Colossus and the Minotaur without opening any of the two doors, on veteran or Havoc difficulty

Kill an enemy by electrifying a pool of water with the Shock Rifle

Beat wave 10 on Endless mode: Black Fortress

Find the secret menu

Find a way to enter the blue key room in E2M6 - Sealed Secrets

Finish episode 2

Kill 20 enemies at the same time with the special ability of the Soul Reaper

Beat E3M1 - Hide and Seek in Havoc difficulty

in E3M1 - Hide and Seek... kill everyone in the machine room

Find all secrets in E2M5 - Searing Sun

Finish episode 3

Kill every enemy and find every secret of episode 2

Kill every enemy and find every secret of episode 3