I started documenting the loot tables for this instance about 3.5 years ago (http://forums-archive.ageofconan.com/showthread.php?193315-The-Iron-Tower-loot-tables), but then left the game for 2.5 years.
I returned about three months ago and have finished what I started:
The Executioner - drops 1 or 2 items:
Cloth (sin) Hood of Haloga [Head]
Medium (BS) Mask of Conajohara [Head]
Plate Helm of Indra [Head]
Ring (str) Ring of Amra the Lion [Ring]
Ring (dex) Ring of Skelos [Ring]
Weapon (DT) Token of Torment [Talisman]
Weapon Token of Terror [Talisman]
Weapon Balthus’s Wolf Crossbow [Crossbow]
Weapon Balthus’s Wolf Bow [Bow]
Weapon (pom/tos) Club of Larsha [1HB]
Weapon (barb/conq) Endless Battle Blade [2HE]
Anoki - drops 1 or 2 items:
Cloth (hox) Hood of Endless Night [Head]
Light (barb) Canach Battle Hood [Head]
Light (pom/tos) Plumed Helm of Divinity [Head]
Medium (BS) Grizzly Brigandine [Chest]
Medium (BS) Grizzly Mask [Head]
Medium (ranger) Thunder River Helm [Head]
Heavy Kothian Battle Helm [Head]
Ring (dex) Ring of Katar [Ring]
Weapon (sin) Sorcerer’s Dread [Dagger]
Weapon (mage) Dagger of Nebthu [Dagger]
Weapon (melee) Royal Zingaran Blade [1HE]
Tana Wolfmilk (optional jail cell boss) - drops 1 item:
Cloth (sin) Quickness of the Katari [Feet]
Cloth (mage) Corpus Ailette [Shoulder]
Cloth (mage) Belt of Haloga [Belt]
Light (barb) Brassard of Ben Morgh [Shoulder]
Light (pom/tos) Eternal Faith Belt [Belt]
Medium (ranger) Balthus’s Woodsman Gloves [Hands]
Heavy Kothian Battle Bracers [Wrist]
Horace the Shadow (optional jail cell boss) - drops 1 item:
Cloth (sin) Bracers of Haloga [Wrist]
Cloth (mage) Corpus Belt [Belt]
Cloth (hox) Antillian Boots [Feet]
Light (barb) Boots of Ben Morgh [Feet]
Light (pom/tos) Lasting Faith Boots [Feet]
Medium (ranger) Balthus’s Woodsman Boots [Feet]
Heavy Kothian Battle Gauntlets [Hands]
Nightcharm (optional jail cell boss) - drops 1 item:
Cloth (sin) Brassard of the Katari [Shoulder]
Cloth (mage) Savage Death Belt [Belt]
Light (barb) Canach Battle Belt [Belt]
Light (pom/tos) Eternal Faith Boots [Feet]
Light (pom/tos) Lasting Faith Gauntlets [Hands]
Medium (ranger) Balthus’s Woodsman Brassards [Shoulder]
Plate Gauntlets of Indra [Hands]
Jack Knives (optional jail cell boss) - drops 1 item:
Cloth (sin) Gloves of Haloga [Hands]
Cloth (mage) Corpus Sandals [Feet]
Light (barb) Belt of Ben Morgh [Belt]
Light (pom/tos) Lasting Faith Belt [Belt]
Medium (ranger) Balthus’s Woodsman Belt [Belt]
Heavy Kothian Battle Pauldrons [Shoulder]
Ring (dex) Ring of the Jungle Cat [Ring]
Vulferam (optional jail cell boss) - drops 1 item:
Cloth (sin) Bracer of the Katari [Wrist]
Cloth (mage) Savage Death Boots [Feet]
Cloth (mage) Savage Death Bracers [Wrist]
Light (pom/tos) Eternal Faith Gauntlets [Hands]
Light (barb) Canach Brassards [Shoulder]
Medium (ranger) Balthus’s Woodsman Bracers [Wrist]
Plate Pauldrons of Indra [Shoulder]
Desumo - drops 2 items:
Cloth (sin) Breeches of Haloga [Legs]
Cloth (hox) Antillian Leggings [Legs]
Cloth (mage) Savage Death Pantaloons [Legs]
Cloth (mage) Breeches of Nebthu [Legs]
Light (barb) Mask of Ben Morgh [Head]
Light (barb) Canach Breeches [Legs]
Light (pom/tos) Lasting Faith Tasset [Legs]
Light (pom/tos) Eternal Faith Tasset [Legs]
Medium (BS) Grizzly Breeches [Legs]
Medium (ranger) Balthus’s Buckskin Chaps [Legs]
Heavy Kothian Battle Greaves [Legs]
Desumo hard mode (Rabidus) - drops same as normal mode, plus possibly one of the following epic cloaks:
Cloak (dex) Kosalan Endurance [Back]
Cloak (int) Kosalan Enruned [Back]
Cloak (wis) Kosalan Grace [Back]
Cloak (str) Kosalan Might [Back]
Guardians - drops 2 items:
Ring (int) Ring of Dagon [Ring]
Weapon (hox) Blade of Endless Night [2HE]
Weapon (pom/tos) Club of Larsha [1HB]
Weapon (guard) Imperial Acheronian Halberd [Polearm]
Weapon (melee/ +hate) Royal Zingaran Sabre [1HE]
Weapon (sin) Royal Atlantean Dagger [Dagger]
Weapon (sin) Sorcerer’s Dread [Dagger]
Weapon Balthus’s Wolf Crossbow [Crossbow]
Weapon Balthus’s Wolf Bow [Bow]
Weapon (mage) Dagger of Nebthu [Dagger]
Weapon (DT) Token of Torment [Talisman]
Weapon Token of Terror [Talisman]
Guardians hard mode - drops same as normal mode, plus one of the following epic necklaces:
Necklace (int) Amulet of Orastes [Necklace]
Necklace (wis) Amulet of Souls [Necklace]
Necklace (str) Amulet of the Asshuri [Necklace]
Necklace (dex) Amulet of Zarallo [Necklace]
and possibly:
Pristine Rock Salt
Treasure chest on the roof - drops 2 items:
Cloth (sin) Tunic of Haloga [Chest]
Cloth (hox) Antillian Jerkin [Chest]
Cloth (mage) Orastes’s Robe [Chest]
Light (barb) Canach Scales [Chest]
Light (pom/tos) Cuirass of Faith [Chest]
Medium (BS) Cuirass of Conajohara [Chest]
Medium (ranger) Balthus’s Woodland Helm [Head]
Medium (ranger) Balthus’s Buckskin Jerkin [Chest]
Heavy Kothian Breastplate [Chest]
Weapon (hox) Blade of Endless Night [2HE]
Weapon Dead Iron Hammer [2HB]
Weapon (BS) Maul of Conajohara [2HB]
Weapon (melee) Shield of Amra [Shield]
Weapon (magic) Staff of Souls [Staff]
Weapon (guard) Imperial Acheronian Halberd [Polearm]