Alkahest Pre-BL

Alkahest Pre-BL is a Windows map viewer and resource inspector for user-supplied Destiny 2 Shadowkeep / Season of Arrivals package files. Current live-game packages are not supported.

This repository is a fork of Alkahest, created by cohaereo and Alkahest's contributors. This project builds on their original architecture, renderer, and tooling.

Install a release

Requirements:

• 64-bit Windows 10 or Windows 11
• A Direct3D 11-capable graphics adapter
• A legally obtained, preserved Shadowkeep / Season of Arrivals client

1. Download the latest Windows archive from GitHub Releases.
2. Extract the complete archive to a writable directory. Keep alkahest-prebl.exe, SDL3.dll, and wordlist.txt together.
3. Run alkahest-prebl.exe.
4. Select one of the following when prompted:
   • the preserved client directory containing packages;
   • the packages directory itself; or
   • a DepotDownloader root containing depots\1085661\<install>\packages, such as G:\depot.

The selected package location is remembered. Game data is read in place and is not copied into the application directory.

Build from source

Install Git and Rust, then use the toolchain pinned by rust-toolchain.toml:

git clone https://github.com/Confetti3/Alkahest-PreBlUpdate.git
cd Alkahest-PreBlUpdate
rustup show
cargo build --profile dist --locked --no-default-features --bin alkahest-prebl
.\target\dist\alkahest-prebl.exe --version

Run target\dist\alkahest-prebl.exe. The build script places the required SDL3.dll in the same directory. The external wordlist.txt file must also be beside the executable when it is moved out of the repository.

The map audio-placement filter is part of the default build. Actual Wwise audio playback is optional and requires a locally installed Wwise SDK plus --features wwise.

To verify the complete source tree before packaging:

cargo fmt --all -- --check
cargo check --workspace --all-targets --locked --no-default-features
cargo test --workspace --all-targets --locked --no-default-features

Troubleshooting

• Ensure you are running target\dist\alkahest-prebl.exe, not an older binary from target\debug or target\release.
• Confirm that the selected packages belong to the preserved Shadowkeep / Season of Arrivals client.
• Keep SDL3.dll and wordlist.txt beside the executable.
• Update your graphics driver if Direct3D 11 initialization fails.
• Logs are written to %LOCALAPPDATA%\cohae\alkahest-prebl\data\alkahest-prebl.log.

Data, licensing, and affiliation

Alkahest Pre-BL distributes no Bungie game data. Users must supply their own legally obtained package corpus. This project is independent and is not affiliated with, endorsed by, or sponsored by Bungie, Inc.

The source is licensed under GPL-3.0-only. See THIRD_PARTY_NOTICES.md for redistributed components.

Verify a release

Release downloads include checksums and GitHub artifact attestations:

Get-FileHash .\alkahest-prebl-v0.7.0-rc.2-windows-x64.zip -Algorithm SHA256
gh attestation verify .\alkahest-prebl-v0.7.0-rc.2-windows-x64.zip --repo Confetti3/Alkahest-PreBlUpdate