Thanks for the great feedback! We're glad you're enjoying the game.
Sorry you got stuck in level 2! As the reward description mentions, you need to press 'F' after collecting the 3 lightning strikes to reveal a hidden path. Press 'F' again after crossing it. You only get to use it once, so choose your moment wisely! This is the part that can be a bit tricky.
Thanks for playing, and we hope that helps!