it might be different from the one Elder_Yeti encountered, but I stumbled across a "Sayer b 'i' is not a function or a string" error in the first loop (when you got teleported back to the Valley) while interacting with the golem.
I'm personally fine with both! if it is meant for three fingers than as the other comment have pointed out, the control between moving and shooting might need to be spaced out a bit more. though I suppose two buttons could've made for a secondary controls option.
This game is an absolute blast and pretty addicting though I kinda have a personal issue with the controls (especially if it's actually targeted for theee fingers players) but I just can't say no to blasting zombies!