Currently you can not change your carerr via the ESC menu, once a map has been selected. But you can still walk up to the skull and do it there. Why is it this way? Why disable the button in the menu?
I think the best solution is just drop a chest at the start of every map so we can stay the same Character but change classes/items based on the level we get. We had this option in V1… was surprised it wasn’t in V2.
Protip: climb to the skull in the upper floor and use it. You can change class from there