Found a bug when in the Ghost Executive/Slim Grim cousin fight. (I was taking trips back and forth to use the vending machine).
1) When you use the exit gate, after the executive, you see Grim. Use it again, you're at the bottom of the tower. Third time, softlocks you in a corner near Grim.
2) After Zaat changes the gate and you leave the executives room, you exit from the rightmost path instead of the center.
Love the Earthbound feel. Trying to beat Elmer. >:(