I Am The Hero

This is it... The big one. Not as hard as it seemed or felt. I had to do alot of trial and error as most of the people in the top 5 for completing this haven't responded to my instant messages by the time/day of writing this with any info. but I figured it out.

You are going to want to play through the campaign for the other achievements but more importantly theres one character we need unlocked. Hes the guy in the green coat with hood.

Now enter workshop fight mode- Your going to need green coat to beat wave 50 as well. So once you load in, your strategy will be to get as many hits as possible without hopefully getting knocked down and losing your counter. The first 5 stages are good but you will probably lose your combo a few times. I used green coat guy to fight all battles and my main character to fight bosses with. It will be important to keep both of your characters blue bars up (activate with your right stick). Your combos will be unbreakable. I got my achievements done in the 20 something levels. The key to this is the green guy and using the forward forward punch (x) combo followed up by mashing the punch (x button)in hopes of getting a critical punch in. Repeat this process back and forth across the screen. In the later levels you will pretty much be permanent blue bar powered. You can turn it off by swapping characters between fights and back. Try not to lose your combo.
After boss fights try and choose things that enhance your blue bar ability such as these-

Helmet- actions are not easily interrupted
Batterypack- beat faster (faster attack combo)
Anonymous drink- increases critical hit judge distance
Theres one that maxes the blue bar I cant remember the name of but that will be useful too.

Keep playing and you will get it. The later levels surprisingly get alot easier with the correct power ups chosen and correct method as writen.