Thank you so much for playing.
yes, the combat is very basic. i do have some more mechanics planned, like an artifact equipment system, that will influence the battles, as well as way more skills, potentially a skill upgrade system and definitely buffs, that will impact the gameplay. nothing too crazy though, this is my first game after all.
regarding the menu issue, i found the bug. it is being caused by the options menu, when clicking the save button. As well as me accidentally deleting the reference to the credits button. this will be fixed in the next update, as it's not a severely game breaking bug.