Hint for the Final Clue

Each of the five clues you have solved have a place on the Final Clue sheet. The shapes listed might give you a hint as to which answers go in which boxes. Once you’ve transposed each clue answer into the Final Clue sheet, you still need to figure out how to get to a three digit combination to open the lock. The operative lines in the clue are, “Point A to point B” and “We’ve crossed paths before.” But there’s also one other question you should ask yourself?

Have I used every tool I was given?

You’re trying to spell a three-letter word. Once you do, you need to turn that word into numbers because the lock uses numbers. Perhaps a reverse of a cipher you used in a clue already?