Ha, I'm glad you enjoyed this really small fraction of our planned game! You absolutely got it right, it is only a small demo.
Hearing how you decided to beat the boss, we could almost make it a feature to just smack a boss while standing on it... I mean, it would be something new, haha. For the attack speed: We will change the player's attack controls a lot so hopefully it will be more enjoyable in the future!
Thank you for the feedback!