What was everyone's hardest A rank ?
Mine was Cosmic Wall Hard mode, took me ages to get 100,000 points, very annoying level.
I thought Cannon's Core was going to be the hardest but it actually is a pretty easy level. It helps that when you complete a certain characters level you get to keep their points if you die.
I also remember Biolizard being a lot more difficult, i used to have problems hitting it when it fires those little red ball things at you.