Thank you!! Sorry, the two player is not working yet, we forgot to remove it from the option! But we are working on two players mode already! In the next updates it will be avaialable! And thank you so much for playing! :D
let me say this though, many casuals in the comments are requesting an easy mode and balances, however, games like dark souls and cuphead are popular due to their difficulty. So, i think you should consider leaving the single player as is, and promoting the game based off of its difficulty. Just my opinion tho.