Originally Posted by TaruZhul
Any advice on how/where to get this one? I've been trying, but can't seem to get.
Beat one mid-boss quickly for 70 or over additional enemies to emerge.
You can get this easy in stage 1. The first mid boss is a little mecha. Thats NOT the one. After a while you fly over a highway/speedway, then a midboss transform and if you have Yun itīs easy: Try to be on the top of the screen and blast him off before he can even shoot you. After you finish him quick, additional enemys appear, kill them all and you get the achivement.