Arcanum Unbound 1.5.0

A major systems update focused on sigils, relics, the Abyss progression chain, guidebook clarity, and overall mechanical consistency.

Sigil System

• Deepened the sigil system into a more complete and predictable core/form/modifier matrix.
• Fixed cases where forms or modifiers could stick and cast the wrong behavior.
• Fixed mana cost and instability preview bugs in the sigil interface.
• Expanded the system with new cores: Pulse, Grasp, Bloom, Veil.
• Added new forms: Lance, Ward, Rune, Cascade.
• Added new modifiers: Resonance, Surge, Sculk, Hollow.
• Reworked existing modifiers such as Fracture, Decay, Echo, and Phase-Lag so they affect gameplay more meaningfully.
• Improved late-game and Abyss-oriented sigil combinations.

Relics and Artifacts

• Major overhaul of the relic/artifact system.
• Wearable relics now follow the same randomized trait logic as the artifact sword and artifact pickaxe.
• Standardized wearable relic generation around the intended 2 positive traits + 1 negative trait structure.
• Expanded both the common trait pool and unique relic mechanics.
• Added at least 10 new relics/artifacts, including deep, dungeon, and progression-based rewards.
• Improved integration between relics, mana flow, sculk mechanics, and endgame combat.

Messura Altar

• Expanded the Messura Altar as a stronger endgame progression loop.
• Enhancement now upgrades existing traits more reliably.
• Infusion now adds a new power together with a new drawback without corrupting item data.
• Improved persistence and consistency of trait levels and artifact progression.

Abyss Progression

Re-synchronized the Abyss progression chain.

• After defeating the Abyssal Remnant, the post-fight choice is restored properly:

1. claim the Heart of the Abyss
2. or destroy the remaining pulse for a Piece of the Abyss

• Reconnected the Enslaved by the Abyss -> The Corrupted Trace boss chain.
• The Corrupted Trace once again correctly leads into the Abyss Poem and rewards Echo of the Abyss.
• Improved overall late-Abyss consistency and phase flow.

Guidebook and UX

• Reworked the guidebook structure.
• Progression and lore now come before recipes.
• Added and updated pages for sigils, relics, Abyss progression, late-game systems, and crafting.
• Improved guidebook navigation and removed dead-end page states.
• Updated book text so it explains the mod for players instead of exposing development-facing notes.

Text and Localization

• Fixed a large number of broken Russian text issues and encoding problems.
• Improved consistency between item names, UI text, guidebook entries, and Abyss progression messaging.
• Cleaned up player-facing naming across multiple systems.

Advancements

Restored the mod’s advancement chain. Fixed broken advancement conditions. Re-linked advancement progression so it displays properly again.