Great job submitting a game! I like your twist on snake and its awesome to see that you implemented an entire upgrade system. I wrote a whole paragraph about how the movement felt really sticky and how frustrating it was but I went back to check something else and I realized you hold to move whoops. I wish that was a little more clear, would've save my fingers from spamming the WASD keys haha.
After I figured out the movement I enjoyed my time playing! It was fun to use all my abilities. Diagonal movement being faster seemed a little strong but provides a feeling of mastery over the game. I also boxed myself in the corner for extended periods of time. It was fun to discover and use all those little strategies. Thanks for participating!