In the Roblox game Infinity Gauntlet | Thanos Simulator by Blg42598, obtaining the Casket of Ancient Winters requires traveling to World5, solving a three-statue symbol puzzle, surviving the two-phase Lazarus boss encounter, and shooting a rotating glowing rock before the timer expires. Successfully hitting the target immediately unlocks the Casket of Ancient Winters weapon and awards the Ancient Winters badge.

Equipping every weapon you currently own before attempting this fight is strongly advised, as having multiple items in your inventory raises your maximum health pool and increases your odds of surviving Lazarus's attacks.

Preparation and Prerequisites

Before heading to World5, you need specific gear equipped in your loadout to complete the required steps and survive high-damage boss attacks:

  • Infinity Gauntlet (or Upgraded Infinity Gauntlet): Required for interacting with puzzle pillars and bosses. You will need the Charge ability (Q key on PC), the Disintegrate projectile (E key), and the Shield barrier (C key).
  • A Weapon with Teleportation: World5 is an isolated floating island. You need a weapon capable of teleportation, such as the Space Stone (press F to teleport) or Stormbreaker, to reach the platform from the spawn area.
  • High-DPS Weapons: Weapons like Stormbreaker, Mjolnir, or the Cosmic Rod allow you to clear waves of high-health minions efficiently while boosting your survivability.

Step 1: Teleport to World5 and Solve the Symbol Puzzle

World5 is an icy wasteland located near the outer edge of the map between the Reality Stone and Space Stone areas.

  1. Use your teleport ability to travel to the floating World5 island.
  2. Locate the central structure featuring three stone statues facing a centerpiece platform. Each statue displays a stone tablet with glowing symbols.
  3. Observe the symbol displayed on the centerpiece.
  4. Charge your Infinity Gauntlet by pressing Q, then fire Disintegrate by pressing E directly at the statue tablet showing the matching symbol.
  5. Repeat this process until all three statues are activated. When a correct tablet is struck, the statue glows neon; selecting an incorrect tablet resets the sequence.

Once all three pillars are successfully activated, the structure unleashes a knockback shockwave and opens a portal in the middle. Walk into the portal to enter the boss arena. Keep in mind that entering the portal consumes it, meaning other players must reopen it if they wish to join.

Step 2: Defeat Lazarus (Phases 1 and 2)

Inside the boss room, locate the central statue of Lazarus. Charge your gauntlet (Q) and fire Disintegrate (E) at the statue to start the battle.

PhaseObjectiveHazards and Boss AttacksSurvival Strategy
Phase 1Defeat 100 Erde NPCsMinions spawn from portals and deal sustained beam damageGroup enemies together and use high-area-of-effect weapons like Stormbreaker or Mjolnir.
Phase 2Defeat 250 Erde NPCsLazarus fires a direct laser dealing 162,000 damage; falling spikes drop from aboveTake cover behind one of the three large rock pillars, or hold your Infinity Gauntlet Shield (C key) during the laser.

Progress during this encounter is saved. If you die during the fight, return to World5 and re-enter the arena; you do not have to restart your kill count from zero. Continue clearing the remaining Erde NPCs until the counter hits zero. Once defeated, Lazarus disappears, and a portal spawns in his place with a countdown timer to enter.

Step 3: Claim the Casket of Ancient Winters

After stepping through the victory portal, you are transported to a small island surrounded by rotating floating rocks:

  1. Identify the single rock among the orbiting ring that emits a bright blue neon glow.
  2. Charge your Infinity Gauntlet with Q, aim directly at the glowing blue rock, and fire your Disintegrate ball by pressing E.
  3. When the projectile connects, the rock lights up with a neon texture, instantly awarding you the Ancient Winters badge and placing the Casket of Ancient Winters directly into your inventory.

Complete this task before the timer runs out. If the countdown reaches zero, unshielded players are frozen and eliminated by the platform's blizzard hazard.

Casket of Ancient Winters Stats and Abilities

The Casket of Ancient Winters is a relic weapon offering significant crowd control and health scaling. It also serves as an alternative to the Power Stone gamepass for grinding kills and fragments at the Forge.

Ability / StatKeybind / InputBase EffectHeart of Ymir Synergy
Health BonusPassiveGrants +10,000 maximum HP to the userIncreases the bonus to +20,000 maximum HP
Ice BlastLeft-Click / TapFires an ice shard dealing 330 damage plus freeze damage (1/60-second debounce)Increases freeze trigger chance
BlizzardE KeyCasts an area-of-effect storm around the player; reduces NPC movement speed by 50% and deals damage every 0.2s (8s cooldown)Grants a guaranteed 100% freeze chance on all enemies in range

While using Blizzard, your character cannot move. For players below 25,000 maximum health, Blizzard's tick damage is calculated as MaxHealth / 70 + 175; if your maximum health exceeds 25,000, each tick deals a flat 100 damage. Switching to another weapon immediately removes Blizzard's 8-second cooldown.

Frequently Asked Questions

Do I lose my progress if I die during the Lazarus boss fight?

No. Progress persists through deaths. If you are defeated during Phase 1 or Phase 2, return to World5 and reopen or re-enter the portal. The remaining kill requirement resumes where you left off rather than resetting back to the beginning.

Can the Casket of Ancient Winters be upgraded?

The weapon itself cannot be upgraded directly at the Forge, but its stats and freeze mechanics receive permanent enhancements once you conquer World5's subsequent challenge and obtain the Heart of Ymir relic.

What is the best way to avoid Lazarus's Phase 2 laser?

Lazarus's laser deals 162,000 damage, which eliminates most players in a single hit. You can completely avoid this damage by positioning yourself behind one of the three tall rocks in the arena or by holding the Infinity Gauntlet's Shield ability (C key) while the beam is firing.