History:Eye of Cthulhu

Main article: Eye of Cthulhu

• 2.0.3.001: Nerfed health from 3050 / 3965 / 4758 / 5055 / 6066 to 3000 / 3900 / 4680 / 4972 / 5967 .

• 1.5.1.003: Now drops 10 .

• 1.5.1.001:
  • Buffed health from 2800 / 3640 / 4732 to 3050 / 3965 / 4758 .
  • It and its Servants of Cthulhu are now vulnerable to cold, sickness, and heat debuffs.
  • Now drops Shield of Cthulhu regardless of world difficulty.

• 1.5.0.001:
  • Buffed Revengeance Mode health from 4550 to 4732 .
  • Nerfed Boss Rush health from 4,500,000 / 5,850,000 / 7,312,500 to 450,000 / 585,000 / 731,250 .
  • Nerfed phase 2 defense from 6 to 0.
  • Nerfed Revengeance Mode phase 3 and 4 defense from 6 to 0 .
  • Servants of Cthulhu no longer drop Hearts in Revengeance or Malice Mode.
  • No longer drops Victory Shards.

• 1.4.5.004: No longer despawns and instead enrages when fought during the day.

• 1.4.5.003: No longer transitions into phase 2 at the start of the fight, and now charges faster and more often as its health decreases in Death Mode.

• 1.4.3.001:
  • Nerfed Servant of Cthulhu's damage from 12 / 24 / 30 / 34 to 12 / 24 / 30 / 33 .
  • Death Mode now causes it to move at highest speed immediately, instead of gradually speeding up as health lowers.
  • Decreased charge frequency in Death Mode.

• 1.4.2.105:
  • Reworked Revengeance Mode AI:
    • Now has a new phase where it charges straight horizontally at the player.
    • Servants of Cthulhu no longer drop anything.
    • Now spawns a flood of Servants of Cthulhu upon reaching 40% health and while lining up its horizontal charges.
    • Now has several different charge patterns that it uses as it lowers in health.
    • Now enters phase 2 at 85% health.
  • Now enters phase 2 instantly in Death Mode.

• 1.4.2.001:
  • Nerfed Boss Rush health from 1,200,000 to 600,000.
  • Nerfed Servant of Cthulhu's Boss Rush health from 120,000 to 60,000.
  • Victory Shards now drop from the Treasure Bag instead of directly from the boss.

• 1.4.1.001:
  • Buffed Boss Rush health from 600,000 to 1,200,000.
  • Buffed Boss Rush damage modifier from 4x to 6x.
  • Buffed Servant of Cthulhu's Boss Rush health from 60,000 to 120,000.
  • Decreased phase 2's Revengeance Mode contact damage modifier.

• 1.4.0.001:
  • Now starts rapidly charging upon reaching 50% health in Revengeance Mode instead of 25%.
  • Now transitions into phase 2 upon reaching 90% health in Death Mode instead of 80%.

• 1.3.4.101:
  • Buffed health modifier from 1.1x / 2.15x to 1.25x / 2.3x .
  • No longer has 15% damage reduction.

• 1.3.4.001:
  • Nerfed health modifier from 1.8x / 4.6x to 1.1x / 2.15x .
  • No longer drops Lunatic Cultist (lore item).

• 1.2.4.101:
  • Buffed Death Mode health modifier from 2x to 4.6x .
  • Increased aggressiveness as its health lowers in Death Mode.

• 1.2.4.002: Buffed Revengeance Mode health modifier from 1.5x to 1.8x .

• 1.2.4.001: Teardrop Cleaver and Victory Shards now drop from the Treasure Bag instead of directly from the boss in Expert Mode.

• 1.2.3.002:
  • Now gains a 2x health modifier in Death Mode.
  • Now charges faster and more often in Death Mode.

• 1.2.1.001: Now increases Stress by 6 instead of 5 if it hasn't been defeated prior.

• 1.2.0.002: Servant of Cthulhu now inflicts Marked for Death for 3 seconds in Revengeance Mode.

• 1.2.0.001:
  • Now gains a 1.5x health modifier in Revengeance Mode.
  • Increased speed.
  • Now inflicts Horror for 3 seconds in Revengeance Mode.
  • Now has a 2% chance to drop Laudanum or Stress Pills in Revengeance Mode.

• 1.1.7.901: Increased Victory Shard drop count from 2-3 / 3-4 to 2-4 / 3-5 .