Anime Astral’s second major update has finally arrived, and while some players expected a smaller patch, there’s actually quite a lot to unpack here. Update 2 introduces a brand-new Demon Slayer-themed world, the Infinite Castle game mode, new units, enemies, progression systems, crafting features, sword passives, achievements, and even a fresh Battle Pass.
If you’ve just logged in after the update dropped, it can feel a little overwhelming. There are new currencies everywhere, new systems to learn, and some features aren’t explained particularly well in-game.
To save you from wandering around the map wondering what half the new buttons do, here’s a complete breakdown of everything added in Anime Astral Update 2.
Anime Astral Update 2 Guide – Infinite Castle, Codes
The update introduces:
- 9 New Units
- 7 New Enemies
- Infinite Castle Game Mode
- New Demon Slayer Map
- New Achievements
- New Progression Systems
- New Gacha Features
- Secret Unit Crafting
- Sword Passives
- New Side Quests
- Battle Pass
- Performance Improvements and Bug Fixes
This is one of the largest content updates the game has received so far, especially for players who have already reached the previous endgame.
Anime Astral Update 2 Codes
SORRYFORDELAY2
SORRYFORSHUTDOWN5
27.5KPLAYERS
28KPLAYERS
GO30K?
24KPLAYERS
25KPLAYERS
6.5MVISITS
7MVISITS
UPDATE2
BATTLEPASS
How to Unlock the New Demon Slayer Map
One of the first questions players have is how to access the new world.
The requirement is simple:
Complete All Sanji Blue Quests
Before the Demon Slayer map becomes available, you’ll need to finish all quests associated with the previous area.
Once completed, you’ll receive the necessary progression requirements to unlock the new zone.
After entering, you’ll immediately notice several new systems scattered throughout the area.
New Demon Slayer World Features
The Demon Slayer map serves as the hub for most of Update 2’s content.
Inside you’ll find:
- Secret Unit Crafting
- Infinite Castle Entrance
- Sword Passive System
- Side Quests
- New Currency Vendors
- Progression Upgrades
Most of your time during this update will likely be spent here.
Secret Unit Crafting Explained
The new map contains a crafting station tied to one of the update’s secret units.
While the complete crafting recipe wasn’t fully explored during early testing, players can already begin collecting materials needed for the secret character.
If you’re interested in obtaining every unit in the game, it’s worth saving any new resources you earn from the Demon Slayer content.
Infinite Castle Game Mode Guide
Without question, the biggest feature in Update 2 is Infinite Castle.
Inspired by Demon Slayer’s Infinity Castle, this mode acts as an endless progression challenge where players fight through increasingly difficult waves of enemies.
How to Unlock Infinite Castle
Initially, players believed a key was required to enter.
A boss enemy reportedly has around a 2.5% chance to drop the key, though some players may receive access through quest progression instead.
If Infinite Castle isn’t available for you yet:
- Complete the new map quests
- Progress through the Demon Slayer storyline
- Defeat available bosses
- Check quest rewards for potential key drops
Infinite Castle Rewards
The mode rewards players with various currencies including:
- Coins
- Shards
- Upgrade Materials
- Progression Resources
The further you push, the more rewards you’ll earn.
However, early testing suggests that farming efficiency may require specialized drop-focused builds.
Infinite Castle Strategy Tips
If you’re planning to grind Infinite Castle, keep these tips in mind:
Prioritize Range
One noticeable advantage during Infinite Castle runs is having enough range to hit enemies safely.
Long-range units allow you to clear waves without constantly repositioning.
Invest in Power Upgrades
The new progression upgrades appear to increase both:
- Power
- Luck
Because of this, many players are prioritizing power upgrades first before branching into other systems.
Consider Drop Farming Builds
Reward scaling appears tied to wave progression.
Using units and setups optimized for farming may significantly improve long-term efficiency.
New Sword Passive System Explained
Another major addition is the Sword Passive system.
Players can now reroll special passive effects onto their weapons.
How Sword Passives Work
Visit the Sword Passive Station in the new map.
From there, you can spend materials to reroll weapon effects.
Some examples discovered so far include:
- Water Breathing
- Flame Breathing
- Thunder Breathing
These passives appear to function similarly to enchantments, though the game currently provides very little information regarding their exact bonuses.
Are Sword Passives Worth Farming?
Absolutely.
Even though the descriptions are currently limited, sword passives are clearly intended to be another layer of character progression.
As more information becomes available, specific passives will likely emerge as the best choices.
For now, it’s worth collecting reroll materials whenever possible.
New Battle Pass Rewards
Update 2 also introduces a Battle Pass system.
The pass contains:
- Summon Tickets
- Exchange Tokens
- Pets
- Premium Rewards
- Progression Resources
Unlike some players initially hoped, the premium track requires Robux to unlock.
Free-to-play players can still claim rewards from the free track.
New Pet Added in Update 2
A new pet has also been added to the game.
Early stats show surprisingly high power values, making it a worthwhile pickup for players looking to maximize overall damage output.
If you’re spending tickets or progressing through the Battle Pass, keep an eye out for pet-related rewards.
New Side Quests
The update introduces new side quests within the Demon Slayer world.
One discovered quest requires players to defeat thousands of enemies from the new map.
Examples include objectives similar to:
- Defeat 2,500 specific enemies
- Complete progression milestones
- Earn special currencies
The exact reward structure is still being explored by the community, but completing these quests will likely be important for long-term progression.
Where Is the Secret Boss?
One mystery surrounding the update is the location of the secret boss.
Many players searched throughout the new map without finding it.
Current theories suggest one of two possibilities:
- The boss appears in a specific spawn location that may be bugged.
- The boss is located inside Infinite Castle.
Since Infinite Castle is heavily connected to Demon Slayer lore, the latter seems fairly likely.
Until more information becomes available, progressing through Infinite Castle is probably your best bet.
Anime Astral Update 2 may not completely reinvent the game, but it adds a solid amount of content for players to grind through. The Infinite Castle mode is clearly the centerpiece of the update, while the Demon Slayer map provides plenty of new progression systems to explore.
The Sword Passive system has a lot of potential, even if the current descriptions are a little vague, and the addition of secret unit crafting gives collectors another long-term goal to chase.
For now, your main priorities should be unlocking the new map, pushing Infinite Castle, farming side quests, and gathering resources for future upgrades. As players continue testing the update, expect stronger farming strategies and secret boss locations to be discovered in the coming days.