Once you get the double jump, you may want to look around the starting area ;)
I don't know; I feel like I've been everywhere I can with the double jump. I found something that "looks like something belongs here" but I apparently don't have the something. Here is my map of explored locations: https://www.qtgraphics.com/files/Screenshot(1).png
.png){kind=link}
P.S. Not a big deal to me but I'll add to the cursor bug. In some rooms, if I open the map the cursor moves at a literal snails pace but go into the next room and it's normal again. It depends where you are when you open the map.
i found out how to solve ur promblem, try going down the bridges, take u down another bridge with a room on the left, there should be a well that has a skull between its to chandlers, then if u go back to the top and interact it should open the room downwards and give u the next upgrade, man i cant believe i didnt notice this sooner (sorry for misspelling)
thanks, anyway the next thing u should do is go to the room where u found the compass then double jump on the ledge on the right, u will see a bar dash through it and continue through the passage, u will enter that house that u couldnt get in before and the missing village, in the chest contains the red hood equip in the menu and talk to the guy thats blocking the other guy with a red hood in the mountains, then u can enter inside that area he was blocking u from entering the name is spider church i think inside will be another boss and will contain the item u need to enter narrow passageways, let me know if u need any more help