Break barrier with Blast Bot
It is also related to a trophy titled Blam!, completing this mission will reward you with a bronze trophy.
Shoot with R1, move with the left analog stick. You can mash R1 to shoot quick enough to destroy enemy blast bots, otherwise simply keep thundering on through the loads of enemies. The blast bot is very well armored so it can take a punch, but it will be destroyed if it takes too much damage if you neglect destroying enemies.