The easiest way to install this on your Quest is using SideQuest, a PC desktop app designed to simplify sideloading apps and games ( even beat saber songs on quest ) on Standalone Android Headsets like Oculus Quest and Oculus Go. It supports drag and drop for installing APK files!

Download SideQuest here: https://github.com/the-expanse/SideQuest/releases

IMPORTANT NOTE:

This is just an engine port, no game assets are included whatsoever. YOU WILL NEED TO LEGALLY OWN HALF-LIFE IF YOU WISH TO PLAY IT IN VR USING LAMBDA1VR.

The original half-life can be purchased on Steam: https://store.steampowered.com/app/70/HalfLife/

PLEASE NOTE: Half-life: Source is not compatible.

Copying the Full Game files to your Oculus Quest

Before attempting to start Lambda1VR you need to do the following:

Create a folder on your Quest called "xash"
Locate the install of half-life on your PC, if installed from Steam then it will be somewhere like C:/Program Files (x86)/Steam/steamApps/common/HalfLife/
Copy the entire folder "valve" to the newly created "xash" folder on the Quest (This will take a long time)

Controls:

YES!, the crowbar has to be swung in real life to smash stuff!

Dominant Hand Controller:

Orientation: Weapon Orientation

Trigger: Fire Primary / Secondary

Grip (Hold): Enable secondary fire

Grip (Click < 200ms): Reload

Click Thumbstick: Use (action)

Off-hand Controller:

Orientation: Flashlight Orientation

Trigger: Shift (to run)

Grip (hold): Weapon Stabilise (hold to remain active)

Click Thumbstick: reserved for future use

Left Controller:

Thumbstick: Move/Strafe

Menu Button: Menu

X: Flashlight on/off

Y: reserved for future use

Right Controller:

Thumbstick (Left / Right) : Snap-Turn

Thumbstick (Up / Down) : Cycle through weapons menu (Press trigger to confirm selection)

A: Crouch

B: Jump

Things to note / FAQs:

Known Issues:

Future To-Dos:

Building:

I will add details on how to build in a future update. For a start you need:

Android Developer Studio
Oculus Mobile SDK 1.23.0
The Lambda1VR folder should be below VrSamples in the extracted SDK