I accidentally soft-locked the game by dropping a key item with "F" because I committed the crime of not reading the instructions first lol. I had no idea there were z/x and hat buttons. Whoopsy
No worries! If it isn't too much work, you may want to consider some non-intrusive notifications that explain things as the game goes on. Like, when you acquire an item it could tell you how to access the inventory to see it.