diff --git a/src/input/keymap.c b/src/input/keymap.c
index d5081ac..3a5cf8e 100644
--- a/src/input/keymap.c
+++ b/src/input/keymap.c
@@ -439,9 +439,28 @@ int keymap_legacy_key(uint16_t keycode, uint32_t codepoint) {
         case KEY_ARROW_LEFT:  return 19;
         case KEY_ARROW_RIGHT: return 20;
 
+        case KEY_LEFT_CTRL:
+        case KEY_RIGHT_CTRL:  return 21;
+        case KEY_LEFT_SHIFT:
+        case KEY_RIGHT_SHIFT: return 24;
+        case KEY_LEFT_ALT:    return 25;
         case KEY_RIGHT_ALT:   return 22;  // for compat w/ doom
         case KEY_CAPS_LOCK:   return 23;  // same here
         case KEY_DELETE:      return 127;
+
+        case KEY_F1: return 31;
+        case KEY_F2: return 32;
+        case KEY_F3: return 33;
+        case KEY_F4: return 34;
+        case KEY_F5: return 35;
+        case KEY_F6: return 36;
+        case KEY_F7: return 37;
+        case KEY_F8: return 38;
+        case KEY_F9: return 39;
+        case KEY_F10: return 40;
+        case KEY_F11: return 41;
+        case KEY_F12: return 42;
+
         default:              return 0;
     }
 }
\ No newline at end of file
diff --git a/src/userland/games/doom/doomgeneric_boredos.c b/src/userland/games/doom/doomgeneric_boredos.c
index 5140233..db47c9b 100644
--- a/src/userland/games/doom/doomgeneric_boredos.c
+++ b/src/userland/games/doom/doomgeneric_boredos.c
@@ -96,7 +96,15 @@ int DG_GetKey(int* pressed, unsigned char* key) {
             else if (k == 21) dk = KEY_FIRE;
             else if (k == 22) dk = KEY_RALT;
             else if (k == 23) dk = KEY_CAPSLOCK;
+            else if (k == 24) dk = KEY_RSHIFT;
+            else if (k == 25) dk = KEY_LALT;
             else if (k == 27) dk = KEY_ESCAPE;
+            else if (k == '\b') dk = KEY_BACKSPACE;
+            else if (k == '\t') dk = KEY_TAB;
+            else if (k == 127) dk = KEY_DEL;
+            else if (k >= 31 && k <= 40) dk = KEY_F1 + (k - 31);
+            else if (k == 41) dk = KEY_F11;
+            else if (k == 42) dk = KEY_F12;
             else if (k == ' ') dk = KEY_USE;
             else if (k == '\n' || k == '\r') dk = KEY_ENTER;
             else if (k >= 'A' && k <= 'Z') dk = k + 32;