The quick answer
The PC game supports WASD keyboard movement. Enable Keyboard Movement under Settings → Gameplay, then adjust movement bindings under Controls.
Check bindings after enabling it
Keyboard movement and Point and Click have separate mappings. Changing one does not automatically rewrite the other. Recheck movement, skills and interaction keys for conflicts.
Movement skills can also be configured to use the cursor’s direction instead of the character’s facing direction. Which feels better depends on the skill and your preference; WASD is not a universal best option.
Warpath behavior
The old 1.2 description said Warpath would move toward the cursor without a direction key. The 1.3 change makes it spin in place when no movement key is held. The 1.5 notes continue to reference WASD and centered-panel interaction, confirming current support for the mode.
In a safe area, try all four directions, release the keys and test the movement or channeled skill you actually use.