This is a really great Granny-like! I even took it a step further and modified extreme mode to make the enemy speed at around 6 and it was still beatable. It would be neat if you could make "impossible" mode a vanilla mechanic so we don't have to use tools to make extreme mode more difficult. The speed of 6 is balanced for impossible mode, I tried 8 and it seems possible too. But you add what you want this is just a suggestion, the map design is good too! Creaky floor boards are in the right place and aren't everywhere.