Based on your feedback I improved the following:

•  The apple count is now accurrate, you can find now all fruit as displayed by the UI
• Optimized key bindings:
[W], [Up], [X] or [MouseRight] Hold to charge and shoot a fireball (can damage enemies and lit torches)
[S], [Down], [Z] or [MouseLeft] Bite (attack enemies and trigger switches)

Please let me know if you found any bugs or any things improve, I highly appreciate it!