History:Astrum Aureus

Main article: Astrum Aureus

• 2.0.3.007: Fixed its bestiary entry using the wrong apostrophe.

• 2.0.3.005:
  • Decreased Astral Infection duration on contact from 4 seconds to 3.33.
  • Decreased Astral Infection duration from lasers from 1 second to 0.75, and from flame crystals from 1.5 seconds to 1.25.
  • Now takes 65% damage from The Ballista's greatarrows.

• 2.0.3.003:
  • Decreased Astral Infection duration on contact from 8 seconds to 4.
  • Decreased Astral Infection duration from lasers from 2 seconds to 1, and from flame crystals from 3 seconds to 1.5.

• 2.0.3.002: Now has a global pierce resistance.

• 2.0.3.001: Buffed health from 98,000 / 156,800 / 188,160 / 235,200 / 282,240 to 100,000 / 160,000 / 192,000 / 240,000 / 288,000 .

• 2.0.2.002:
  • Changed Boss Checklist Mod despawn message from "Astrum Aureus' program has been executed. Initiate recall." to "Aureus has neutralized all threats. Resume prior reconnaissance."
  • Lasers now have an acceleration of 0.5% increased velocity per frame (34.89% increase per second).
  • Homing flame crystals now have 50% higher acceleration multiplier and 25% higher maximum speed in Death Mode.
  • Now properly displays vanilla debuff colors and Hunter Potion effects.

• 2.0.2.001:
  • Now deals no contact damage, and has halved damage reduction and defense while idle.
  • Now stays idle for longer in later phases and has reduced speed.
  • Added new sound effects for its jumps.
  • Changed Bestiary entry from "A multi-legged mechanical beast, its very existence speaks of the extent of control the astral virus has. Not even machinery can stand against it." to "A multi-legged mechanical beast, its very existence speaks of the extent of control the astral virus has over the non-sapient. Not even machinery can stand against it."

• 2.0.1.003: Decreased hit sound delay from 20 to 16.

• 2.0.1.002:
  • Added aftermath sound for spawning the Astral Infection.
  • Changed the hit sound.

• 2.0.1.001:
  • Removed the stat buff that it received after defeating Moon Lord.
  • Now always drops Suspicious Looking Jelly Bean.

• 2.0.0.001:
  • Now spawns 6 homing flame crystals instead of 9 flame crystals when it stomps.
  • No longer drops Hallowed Key.

• 1.5.1.003:
  • Now drops 60 .
  • Buffed health from 89,200 / 142,720 / 171,200 to 98,000 / 117,600 / 188,160 .
  • Nerfed post-Moon Lord health from 243,750 / 390,000 / 468,000 to 196,000 / 313,600 / 376,320 .
  • Can now be damaged while it is teleporting.
  • Increased walking animation frames-per-second by 50%.

• 1.5.1.001:
  • Buffed base health from 84,000 / 134,400 / 171,200 to 89,200 / 142,720 / 171,200 , and post-Moon Lord health from 230,000 / 368,000 / 468,000 to 243,750 / 390,000 / 468,000 .
  • Buffed contact damage from 80 / 176 / 198 / 209 to 100 / 220 / 242 / 253 .
  • Buffed Astral Laser damage from 74 / 128 / 148 / 160 to 88 / 156 / 184 / 200 .
  • Buffed Astral Flame Crystal damage from 80 / 140 / 160 / 172 to 100 / 172 / 208 / 228 .
  • Buffed damage reduction from 15% to 50%.
  • No longer decreases defense to 0 while idle.
  • No longer deals contact damage while teleporting.
  • Increased Astral Flame Crystal frequency and Aureus Spawn is moved from third phase to an added fourth phase below 40% / 50% health.
  • Added a fifth phase below 30% health which increases the number of stomps and lasers, and causes fall speed to alter with each jump.
  • Now vulnerable to heat debuffs, but resistant to sickness debuffs.
  • Death Mode changes:
    • Now damages itself for 1% of its health to summon Aureus Spawns, up to a minimum of 1 remaining health.
    • Increased velocity and spread of Astral Flame Crystals.
  • Now drops Gravistar Sabaton regardless of world difficulty.
  • Increased Hallowed Key drop rate from 20% to 33%, and it now drops directly from the boss.
  • Fixed the hitbox.

• 1.5.0.001:
  • Nerfed defense from 50 to 40.
  • Nerfed post-Moon Lord health from 624,000 to 230,000 / 368,000 / 468,000 .
  • Nerfed Boss Rush health from 7,400,000 / 11,840,000 to 740,000 / 1,184,000 .
  • Post-Moon Lord buff is no longer exclusive to Revengeance Mode.
  • Decreased post-Moon Lord damage multiplier from 3x to 2x.
  • No longer immune to any debuffs except Confused, Pearl Aura, Astral Infection, and Poisoned.
  • Now always jumps towards a player instead of away from them.
  • Can now walk on platforms in its idle phase.
  • Decreased recharge timer from 2.5 seconds to 2. While enraged, it will no longer recharge.
  • Now fires 6 crystals instead of 10 while above 75% health.
    • Crystals are no longer fired at the same time, they are now fired consecutively.
  • Now has a third phase that starts at 50% health, during this phase, it now cycles through all of its attacks 50% faster. Its recharge timer does not change.
  • Now utilizes three oval-shaped hitboxes to make the fight fairer.
  • Now drops 25 instead of 35 .
  • Decreased Fallen Star drop amount from 25-40 / 30-50 to 18-24 / 20-30 .
  • Fallen Star drops are now compacted into stacks of 2.

• 1.4.5.004:
  • Nerfed health from 96,000 / 153,600 / 195,200 to 84,000 / 134,400 / 171,200 .
  • Nerfed Post-Moon Lord health from 704,000 to 624,000 .
  • Nerfed Boss Rush health from 8,400,000 / 13,440,000 / 13,440,000 to 7,400,000 / 11,840,000 / 11,840,000 .
  • Now less aggressive in Death Mode, and reduced the spread and amount of its lasers.
  • Now enrages during the day.
  • Now makes laser fire noises when stomping.

• 1.4.5.003:
  • Buffed contact damage from 80 / 136 / 170 / 195 to 80 / 176 / 198 / 209 .
  • Now fires more lasers, moves quicker, and has decreased attack delay as its health decreases in Death Mode.

• 1.4.5.002: No longer immune to the Life Drain debuff.

• 1.4.5.001:
  • Jumps now try to intercept and slam the player if they are moving.
  • Jump height now increases based on how high up the player is.
  • No longer immune to War Cleave.

• 1.4.4.002: No longer drops Lunar Fragments.

• 1.4.3.002: No longer immune to Celled, Dryad's Bane, or Oiled.

• 1.4.3.001:
  • Nerfed contact damage from 80 / 136 / 170 / 195 to 80 / 136 / 156 / 168 .
  • Nerfed pre-Moon Lord laser and crystal damage from 74 / 128 / 160 / 184 to 74 / 128 / 147 / 158 .
  • Nerfed post-Moon Lord laser and crystal damage from 222 / 384 / 480 / 552 to 222 / 384 / 441 / 476 .
  • No longer immune to Betsy's Curse.
  • Death Mode changes:
    • Transitions into Phase 2 and 3 immediately instead of below 75% and 50% health.
    • Fires projectiles at the highest rate immediately, instead of gradually increasing rate as health lowers.
    • Runs, jumps, and falls at the highest speed immediately, instead of gradually speeding up as health lowers.
  • Updated Boss Checklist's instruction to summon it.

• 1.4.2.108:
  • No longer immune to Frostburn.
  • Fixed a bug where defeating it would crash the game in multiplayer.

• 1.4.2.106:
  • Buffed Boss Rush health from 1,400,000 / 2,240,000 / 2,560,000 to 8,400,000 / 13,440,000 / 1,440,000 .
  • Nerfed contact damage from 90 / 144 to 80 / 128 , and defense from 70 to 50.

• 1.4.2.105:
  • Can now jump further horizontally.
  • Now falls more quickly while using its stomp attack and if the player is directly below it.
  • Can now jump through tiles in Revengeance Mode.
  • Lasers now pierce through the player.
  • Flame crystals now fade in faster and have a significantly smaller explosion.
  • Fixed recharging animation being drawn lower than intended.

• 1.4.2.104:
  • Now inflicts Astral Infection for 4 seconds on contact instead of God Slayer Inferno for 3 seconds.
  • Flame crystals now inflict Astral Infection for 3 seconds instead of God Slayer Inferno for 2 seconds.
  • Lasers now inflict Astral Infection for 2 seconds instead of God Slayer Inferno for 1 second.

• 1.4.2.103:
  • Buffed health from 80,000 / 128,000 / 163,200 / 252,800 to 96,000 / 153,600 / 195,200 / 299,200 , and nerfed defense from 120 to 70.
  • Buffed post-Moon Lord health from 640,000 to 704,000 .
  • Buffed Boss Rush health from 1,200,000 / 1,920,000 / 2,240,000 to 1,400,000 / 2,240,000 / 2,560,000 .
  • Flame crystals are now easier to see.
  • Flame crystals and lasers now have afterimages.

• 1.4.2.102:
  • Now immune to Lava.
  • Now drops Starlight Fuel Cell, Nebulash, and Hallowed Key.
  • Decreased hit sound volume, and slightly increased hit sound delay.
  • Now displays two status messages on defeat, indicating that the Astral Chest can be opened and that Astral Infection enemies are now buffed and have new drops.

• 1.4.2.101: Buffed health from 63,750 / 102,000 / 130,080 / 201,760 to 80,000 / 128,000 / 163,200 / 252,800 , and damage reduction from 10% to 15%.

• 1.4.2.002: Lasers now use sprites instead of drawcode.

• 1.4.2.001:
  • Buffed health from 51,000 / 81,600 / 104,120 / 161,400 to 63,750 / 102,000 / 130,080 / 201,760 .
  • Nerfed Boss Rush health from 2,400,000 / 3,840,000 / 4,480,000 to 1,200,000 / 1,920,000 / 2,240,000 .
  • Decreased Post-Moon Lord minimum coin drop count from 3 to 35 .
  • Lasers can no longer be shot while teleporting.
  • Projectiles now have more descriptive names.

• 1.4.1.003:
  • Decreased minimum coin drop amount from 20 to 15 .
  • Increased the volume of hit sound, and increased the delay between when hit sound can play.

• 1.4.1.001:
  • Buffed Boss Rush health from 1,000,000 / 1,600,000 / 1,840,000 to 2,400,000 / 3,840,000 / 4,480,000 .
  • Buffed base contact damage from 70 / 112 to 90 / 144 .
  • Increased God Slayer Inferno duration from contact from 2.5 seconds to 3.
  • Increased God Slayer Inferno duration from crystals from 1 second to 2.
  • Now has set amounts of contact damage per phase instead of having damage based on health.
  • Now drops Greater Healing Potions.
  • No longer takes 50% damage from Crystal Bullet shards, Holy Arrow stars, split Terra Arrows, and split Terra Bullets.

• 1.4.0.002:
  • Decreased the size and amount of dust.
  • Fixed it still appearing as Astrageldon Slime on the Boss Checklist mod's boss checklist.

• 1.4.0.001:
  • Introduced as a replacement for Astrageldon Slime, with the following changes:
    • Nerfed health from 61,000 / 97,600 / 129,720 / 188,600 to 51,000 / 81,600 / 104,120 / 161,400 , buffed contact damage from 10 / 16 to 70 / 112 , and buffed defense from 0 to 120.
    • Now has 10% damage reduction.
    • No longer jumps at all times.
    • Now shoots blasts of lasers in succession instead of shooting a blast of fireballs after every few jumps.
    • Now shoots homing crystals in multiple directions instead of fireballs.
    • Now spawns Aureus Spawns occasionally in Revengeance Mode and higher.
    • Will now occasionally attempt to jump onto the player.
    • Will now occasionally teleport above the player.
    • Now uses a custom hit sound.
    • Now has a unique sound when landing on tiles.
    • No longer has transparency.
    • Resprited it and map icon.
    • Resprited crystal projectiles.