The map is very needed in Level 5, as it shows where and how to get to which rooms. There is an bomb upgrade in level 5 as well.

But what's funny, is you said that the scripts are good so far in the game. I only have two scripts. One is for statues, so that they shoot less frequently and they will only shot when you stab your sword. The other is for level 6. Those are the only scripts in the game.