My first impression to this game is, it’s like Saronite Chain Gang from Hearthstone, two dudes forced to destroy a rock while saying “How long can this go on?” :D
It’s simple and has nice music in the background. It has a way to disrupt your oppenent progress by picking up a potion and hope it will regenerate him. And I like how the characters just randomly dancing around on main menu…
Probably, you could add some indicator that a character already picked up the hammer, so they don’t getting confused when they tried to pick it but just walk through it.