DOOM Eternal Arenas Description

First cacodemon arena - 1 caco + 1 spider + 1 spider
Arena with an extra life elevator - 2 caco + 1 caco and 1 spider

Electrified arena 1st stage - 2 caco + 1 spider
Electrified arena 2nd stage - 1 knight + 1 caco + 1 knight
After the great gates - 1 rev and 1 spider + 1 knight and 1 caco + 2 spiders
Slayer gate #1 - 1 dread and 2 revs + 1 dread and 2 revs
Last arena - 1 spider and 1 rev + 1 knight and 1 caco and 1 spider

First whiplash arena - 3 whiplashes
After rocket launcher pick up - 3 cubi and 1 caco
Arena before the Pit - 1 cubus and 1 caco + 1 spider and 1 rev and 1 knight and 1 whiplash + 1 cubus and 1 rev
The Pit - 1 whiplash and 1 spider + 2 cubi
Slayer Gate #2 - 2 cubi and 1 knight + 1 cubi and prowlers + 3 spiders
Last arena - 2 revs + 1 spider and 1 knight + 1 whiplash and 1 spider and 1 rev and 1 cubus

First arena - 1 pinky + 2 revs and 2 pinkies + 1 spider and 1 cubus and 1 knight and 1 whiplash
Doom hunter boss fight - kill prowlers

First arena - 4 cubi + 1 whiplash and 1 rev and 1 carcass and 1 knight and 1 caco + 2 whiplashes and 2 prowlers
3 keys arena - 2 cubi and 2 spiders + 1 dread and 2 revs + 2 cacos and 2 carcasses
Slayer gate #3 - 3 carcasses and many soldiers + 3 knights and 1 dread and 1 pinky and 3 prowlers

Sticky arena - 1 cubus and 1 rev + 1 cubus and 1 carcass + 1 caco and 1 rev and 1 dread
Slayer gate #4 - 2 tyrants and 2 cubi and 2 whiplashes + 1 baron
After the crashed plane - 1 cubus and 1 carcass and 1 whiplash + 1 dread and 1 spider and 2 prowlers
Berserk arena - kill 3-4 cubi and 1 spider then go berserk and kill'em all
Final arena - 1 cubus and 1 spider and 1 pinky and 1 carcass + 1 whiplash and 1 pinky + 1 cubus and 2 whiplashes and 1 carcass

First arena (outside) - 1 spider + 1 caco and 1 carcass and 1 cybercubus -> then 1 elemental and 1 dread + 1 doom hunter
First Mars arena with totem - 2 carcasses and 2 caco and 1 knight and 1 dread
Slayer gate #5 - 1 marauder and 5 maykrs and 5 prowlers + 5 knights + 2 barons
Hebeth arena - 1 cubus and 1 baron and 1 dread + 2 knights and 1 spider and prowlers + 1 doom hunter

First glorious arena - 1 arch and 1 knight and 1 prowler
Second arena - 1 elemental and 1 dread and 1 cybercubus + 1 doom hunter and 1 caco
Third arena - 1 knight and 1 carcass + 1 whiplash and 1 baron and 2 prowlers + 1 arch
Slayer gate #6 - 1 arch + 2 elementals + ??? + 1 tyrant and 2 cubi

Quad damage arena - 1 tyrant + 1 caco and 1 whiplash and 1 cybercubus
The Mill - 1 dread + 1 carcass and 1 whiplash + 1 cybercubus and 1 caco and 1 knight and 1 prowler + 1 arch
Final arena - 1 cybercubus and 1 whiplash and 1 spectre + 1 knight and 1 carcass + 2 doom hunters and 1 dread

First arena - 1 macubus and 1 rev + fodder + 1 baron + 1 elemental and 2 whiplashes + 1 doom hunter and 2 prowlers
Extraction process - 1 dread and 1 spider and 1 rev and 1 carcass + 1 arch + 1 marauder
Final arena - 1 tyrant and 1 whiplash and 1 prowler and 1 carcass + 1 baron and 1 spider and 1 rev and 2 cacos + 1 doom hunter

First arena - 2 drones + 1 cybercubus and 1 knight and 1 rev + 2 drones and 1 cubus <BFG here> and 1 dread and 2 whiplashes
Totem arena - 1 spider and 1 prowler and 2 drones + 1 doom hunter and 2 drones + 1 dread
Left side - 2 drones + 1 arch + 1 elemental and 1 cubus + 1 dread
Then left side (totem) - 1 cybercubus and 1 spider and 1 whiplash and 1 knight and 1 rev and 1 drone (KILL ANY 2 HEAVIES) + 1 tyrant and 1 cubus and 1 whiplash + 1 cybercubus <BFG here> and 1 rev
Final arena - 2 cybercubi and 1 knight and 1 rev and 3 drones + 1 baron and 1 whiplash and 1 caco and 1 drone + 1 baron and 2 whiplashes and 1 caco and 1 drone

First arena - 1 spider and 1 rev and 1 caco + 1 cybercubus and 1 cubus <BFG here> and 1 knight and 1 carcass + 1 baron and 1 rev + 1 whiplash and 1 prowler + 1 elemental and 1 whiplash and prowler + 1 tyrant + 1 doom hunter
First arena of the final building - 1 tyrant and 2 mancubi and 2 spiders and 1 rev + 1 baron and fodder + TOTEM and 2 tyrants and 2 pinkies and 1 rev and 1 caco
Final arena - <BFG here> 1 cybercubus and 1 cubus and 1 dread and 1 knight and 2 spiders and 1 pinky and 2 revs + 2 elementals + 1 marauder + 1 arch