It’s actually spelled “chamberrr”
I recommend you avoid games with continuous movement early on. Moving with joystick feels very bad until you get your VR legs. Also get the Lab, Valve’s free VR minigame collection.
This game is timeless. It was released in a time when the arena FPS was on its way out and server browsers were still the norm for PC online multiplayer, yet it has hardly aged.
If you haven’t done so already, I suggest you start taking notes while playing the game. You’ll need to keep track of what you have to come back to a place for.