Functional Crossword Puzzle.
UPDATE: Missing clues/numbers have been added and typo fixed!
You can download a print ready PDF HERE.
I've never written a crossword before so apologies for some of the more obscure words and bizarre combinations. It was tricky to strike a balance between proper crossword form and keeping it looking like a skull. Hopefully it's not too hard (or easy!).
UPDATE: We have a winner! Congratulations to Linty who was the first person to solve the entire thing on the first try!
If you're stumped the answers are now HERE.