Nah, there is an easy way to dodge the attack. Simply double-dash to the left or right approximately 1~2 seconds before he releases the big chunk of ice, not right after he releases it. I was able to finish him quite fast too. When you start the fight, use the Missile and Charge shot combo until you can pull off his armor. Right after you pull it off, change to Hypermode and keep pressing the attack button (A or B, depends on your setup) while dodging his "freeze" attack. He's supposed to have half of his Health bar depleted if you were successfully able to use up a full Energy Tank on him. For the rest of the fight, you repeat the process while still dodging his attacks. You just have to be really fast!
Don't forget, before the fight (against the Space Pirates), only use your Missiles and Charge shots until they are all dead. You want to keep at least 3 Energy Tanks for Rundas.
For my personal experience, I had 18 energy left at the end of the fight only because I wasted an Energy Tank on those poor little Space Pirates. It was fun though! ^^
Random game thought :
Why is Bionic Commando Rearmed 2 getting so much hate? We finally get a real game and they're not even satisfied... I'm starting to hate the gaming community so f****** much...
