Thank you!! I'm really glad you liked it, it seems a lot of people forgot about the teleport :') You're right I think because it's at the bottom it's easily missed/forgotten.
We made the decision to go with the big health bar for the boss so it would be like a progress bar :) and if we had time I think we would have made the player health/mana bigger or at the bottom of the screen to make it more obvious.
Thanks again for your feedback I really appreciate it!