Open the file "HalfLifeAlyx.ini" in the folder "...\Steam\steamapps\common\SteamVR\drivers\hlalyx" (or old method "...\TrueOpenVR\Settings\Drivers"), using a text editor.
Find the desired action and enter a new key name.
Warning! The "S" button is used by SteamVR, so arrows are used to move, not WASD (in the spectator window can). Buttons and profiles "WASD" can only be used with a language layout without the character "S", for example, you can switch to the Russian language layout before the game (if it is not there, you can add it during the game and then delete it).
Also in the driver archive there are already several ready-made key bindings, maybe one of them will suit you.
| Key name | Value |
|---|---|
| MOUSE LEFT BUTTON | MOUSE-LEFT-BTN |
| MOUSE RIGHT BUTTON | MOUSE-RIGHT-BTN |
| MOUSE MIDDLE BUTTON | MOUSE-MIDDLE-BTN |
| MOUSE SIDE 1 BUTTON | MOUSE-SIDE1-BTN |
| MOUSE SIDE 2 BUTTON | MOUSE-SIDE1-BTN |
| ESCAPE | ESCAPE |
| F1 | F1 |
| F2 | F2 |
| F3 | F3 |
| F4 | F4 |
| F5 | F5 |
| F6 | F6 |
| F7 | F7 |
| F8 | F8 |
| F9 | F9 |
| F10 | F10 |
| F11 | F11 |
| F12 | F12 |
| TAB | TAB |
| CAPS-LOCK | CAPS-LOCK |
| SHIFT | SHIFT |
| CTRL | CTRL |
| WIN | WIN |
| ALT | ALT |
| SPACE | SPACE |
| ENTER | ENTER |
| BACKSPACE | BACKSPACE |
| ~ | ~ |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 9 |
| 0 | 0 |
| - | - |
| = + | = |
| a A | A |
| b B | B |
| c C | C |
| d D | D |
| e E | E |
| f F | F |
| g G | G |
| h H | H |
| i I | I |
| j J | J |
| k K | K |
| l L | L |
| m M | M |
| n N | N |
| o O | O |
| p P | P |
| q Q | Q |
| r R | R |
| s S | S |
| t T | T |
| u U | U |
| v V | V |
| w W | W |
| x X | X |
| y Y | Y |
| z Z | Z |
| [ | [ |
| ] | ] |
| ; : | : |
| ‘ « | APOSTROPHE |
| \ | \ |
| < | < |
| > | > |
| ? | ? |
| PRINTSCREEN | PRINTSCREEN |
| SCROLL-LOCK | SCROLL-LOCK |
| PAUSE | PAUSE |
| INSERT | INSERT |
| DELETE | DELETE |
| HOME | HOME |
| END | END |
| PAGE-UP | PAGE-UP |
| PAGE-DOWN | PAGE-DOWN |
| UP | UP |
| DOWN | DOWN |
| LEFT | LEFT |
| RIGHT | RIGHT |
| NUM-LOCK | NUM-LOCK |
| NUMPAD 0 | NUMPAD0 |
| NUMPAD 1 | NUMPAD1 |
| NUMPAD 2 | NUMPAD2 |
| NUMPAD 3 | NUMPAD3 |
| NUMPAD 4 | NUMPAD4 |
| NUMPAD 5 | NUMPAD5 |
| NUMPAD 6 | NUMPAD6 |
| NUMPAD 7 | NUMPAD7 |
| NUMPAD 8 | NUMPAD8 |
| NUMPAD 9 | NUMPAD9 |
| NUMPAD / | NUMPAD-DIVIDE |
| NUMPAD * | NUMPAD-MULTIPLY |
| NUMPAD - | NUMPAD-MINUS |
| NUMPAD + | NUMPAD-PLUS |
| NUMPAD DEL | NUMPAD-DEL |