@maluskhan As metioned in the description, you only take fall damage if you fall while having a potion :) You also take damage while smashing into things too fast, but also only while carrying a potion. That's most likely the cause of why you're taking random damage.
Acid insta-kills you, but that's the only thing that does. Skeletons don't kill instantly (and if they do it's a bug I haven't found :stuck_out_tongue: , though I have just checked to make sure) and each potion only takes one heart of damage. If a potion hits you and you're carrying another potion, you take two hearts of damage.
I feel like it would be uncomfortable to jump using the space bar and WSAD, while you only have to hold it for a little bit to make potions. You can't really use arrow keys, the mouse, and make potions at the same time. I could perhaps solve that by making the right mouse button make potions though. The controls could use some work for sure.
Thanks for checking it out! And yeah, it's too hard. I didn't have the time to balance it properly.