I'm level 130, and I'm still having one heck of a time beating the martians on the 15 round challenge. I have a plan, though, for which I need some information. Namely- How fast do you have to go before the martians? Or, more directly- What is the martian speed. My plan is to pair 2 fires and 2 waters together and have the waters seal the martians off with sleep and then have the fires beat the holy heck out of the concious ones unaffected by sleep. Can someone please tell me what the martian speed is for the 15 round challenge?