Neco arc x Deadlock Sounds

A large Neco Arc & Neco Chaos themed audio overhaul for Deadlock.

This sound pack replaces music, announcements, voices, countdowns and contextual audio across many different parts of the game.

Rather than replacing only a single sound, the pack connects custom audio to specific Deadlock events so the sounds react naturally to what is happening during a match.

Features

Custom audio is included for:

• Lobby & Matchmaking

• Match Found

• Hero Select

• Pre-Match Countdown

• Match Start

• Pause Music

• Pause Resume Countdown

• Victory / Defeat

• Shop Music

• Secret Shop

• Urn Announcement

• Urn Carrying

• Urn Waiting Voices

• Urn Carrier Voices

• Urn Delivery

• Rift Events

• Midboss

• Tower Alerts

• Sinner Ambience

• Sinner's Sacrifice

• Magic Carpet

• Veil Walker

• Post-Game Results

And more.

Neco Chaos Urn Voices

The Urn includes an expanded custom Neco Chaos voice system.

The current build replaces:

• 32 Urn waiting voice events

• 257 Urn carrier-related voice events

Multiple voice clips are distributed across pickup, carrying, dropping and delivery-related events.

Custom Countdown System

The pre-match countdown and pause countdown are handled independently.

Pre-Match Countdown

10 → 9 → 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1

Pause Resume Countdown

3 → 2 → 1 → Continue

Separate custom sound events are used so the two countdown systems do not interfere with each other.

Contextual Audio

Several sounds are connected directly to Deadlock game states.

• Urn music follows the Urn carrying state.

• Rift audio follows the capture state.

• Shop tracks loop while appropriate.

• Sinner ambience uses positional 3D audio.

• Veil Walker audio follows the modifier.

• Magic Carpet uses its own looping audio.

• Midboss has separate spawn, low-health and death audio.

• Friendly and enemy structure destruction use separate alerts.

Installation

Deadlock Mod Manager

Download the latest Neco Arc × Deadlock — Aru Audio Pack.

Open Deadlock Mod Manager, install the downloaded package and enable the sound pack.

Restart Deadlock if necessary.

Manual Installation

Download and extract the ZIP file.

Locate:

pak99_dir.vpk

Copy it to:

Deadlock/game/citadel/addons/

Then start or restart Deadlock.

Compatibility

Other sound mods that replace the same Deadlock resources may conflict with this pack.

Possible conflicts include mods that replace:

• Music

• UI sounds

• Gameplay sounds

• Voice lines

• Countdown sounds

• Soundevent resources

If something does not work correctly, temporarily disable other sound mods and test this pack by itself.

The pack uses pak99_dir.vpk to give it a high load priority.

Gameplay

This is intended as a client-side audio/cosmetic modification.

It does not intentionally modify:

• Character balance

• Weapon damage

• Ability damage

• Match rules

• Server-side gameplay

Some client-side resources are modified only to connect custom audio to the appropriate Deadlock events.

Technical Information

The project uses a reproducible Python-based build pipeline.

The build process can:

• Inventory source audio

• Calculate SHA-256 hashes

• Analyze audio levels

• Convert and normalize audio using FFmpeg

• Generate Source 2 sound resources

• Modify Deadlock soundevents

• Compile Source 2 resources

• Build the final VPK

• Verify VPK CRCs

• Verify compiled audio resources

• Check looping metadata

• Audit soundevent-to-resource mappings

The current build contains:

72 compiled custom resources

352 mapped event/resource changes

Current Status

This is currently a beta/test build.

The pack is functional, but some audio mappings, balancing and compatibility details are still being improved.

Source Code

https://github.com/AruHonshou/neco-arc-X-deadlock

Deadlock Updates

Deadlock is actively updated, so Valve may occasionally change internal soundevents or resources used by this pack.

If an update breaks something, please report:

• Which sound stopped working

• When it should play

• Whether you have other sound mods installed

Disclaimer

This is an unofficial fan-made sound modification.

Deadlock, Neco Arc, Neco Chaos, MELTY BLOOD and all referenced properties belong to their respective rights holders.

Third-party music, voice clips and other media remain the property of their respective creators and rights holders.

No ownership of third-party material is claimed.

This project is not affiliated with or endorsed by Valve, TYPE-MOON, French-Bread or the creators of the third-party media included in the pack.

Burunyuu~