Hell's Arena

The voice booms: "Not bad mortal! For the weakling that you are, you show some determination." You hear screams everywhere! "More Blood! More BLOOD!" The voice continues: "I can now let you go free, or you may try to complete the challenge!" "Do you want to continue the fight?" [y/n]

After choosing to fight the second round:

The voice booms: "I like it! Let the show go on!" You hear screams everywhere! "More Blood! More BLOOD!"

After winning the second round:

The voice booms: "Impressive mortal! Your determination to survive makes me excited!" You hear screams everywhere! "More Blood! More BLOOD!" "I can let you go now, and give you a small reward, or you can choose to fight the final challenge!" "Do you want to continue the fight?" [y/n]

After choosing to fight the final round:

The voice booms: "Excellent! May the fight begin!!!" You hear screams everywhere! "Kill, Kill, KILL!"

After defeating all enemies:

The voice booms: "Congratulations mortal! A pity you came to destroy us, for you would make a formidable hell warrior!" "I grant you the title of Hell's Arena Champion!" "And a promise is a promise... search the arena again..."

Second round: demon (x3), cacodemon (x1)

Third round: cacodemon (x2)

Second round: demon (x3), cacodemon (x2)

Third round: cacodemon (x3)

Second round: demon (x3), cacodemon (x3)

Third round: hell knight (x2)

Second round: demon (x3), cacodemon (x4)

Third round: baron of hell (x2)

Second round: demon (x3), cacodemon (x5)

Third round: baron of hell (x2)

Winning the first round, then choosing to continue: chaingun

Winning the second round, then choosing not to continue: shotgun shell (3x8), small med-pack, large med-pack

Winning the second round, then choosing to continue: shotgun shell (4x8), 10mm ammo (4x24)

Winning the second round, then choosing to continue, AoB: shotgun shell (4x8), 10mm ammo (4x24), Large Health Globe

Winning the final round: rocket launcher, rocket (3x3), blue armor, large med-pack, Supercharge Globe. Additionally, if playing on Nightmare, respawning of monsters stops.

AoB victory: large med-pack (x2), homing phase device, blue armor, Supercharge Globe

AoMr victory: power mod pack, blue armor, Supercharge Globe, large med-pack, 10mm ammo chain

AoSh victory: double shotgun, blue armor, Supercharge Globe

AoI victory: rocket launcher, rocket (3x3), blue armor, steel boots, Supercharge Globe

AoLT victory: 10mm ammo chain, shell box, blue armor, large med-pack, Supercharge Globe

AoP victory: rocket launcher, rocket (3x3), blue armor, large med-pack (x2)

AoRA victory: same as unchallenged victory, but all spawned near the stairs

AoD victory: same as unchallenged victory, but enemies stop respawning

AoMs victory: rocket launcher, rocket (3x3), red armor, plasteel boots

AoHu victory: rocket launcher, rocket (3x3), ballistic vest or phaseshift armor or acid-proof boots, large med-pack, Supercharge Globe

Hell's Arena will commonly spawn with a modifier, eg. The pillars have their corners cut off or the map is shaped like a wide cross instead of an oval.