This game is a lot of trial and error, but is done in a way where you learn when you fail (eventually). There are some issues, where if you kill something with your sword, you "move" and move through a wall, resulting in getting stuck. I had this issue when killing a "zombie" which was inside a wall which opened up with a switch, but when I killed the zombie, I moved through the wall and became stuck, requiring me to restart the game. In another instance, when I killed the green flying tentacle thing that kills you when the doors on the entrances shut, I "moved" through the wall as well, but thankfully, there is a small gap on the side you can move around to return to the area you are supposed to be.