Break barrier with blast bot is a mission in Jak 3. Jinx managed to capture a blast bot and hook it up with a remote control system as well as more explosives than the standard package. Torn asked Jak to use the remote to direct it through the Industrial Section and blow up the last barrier blocking the way from the Port to the New Haven district.
The PlayStation 3 and Vita versions of this mission are related to a trophy named "Blam!", completing this mission will reward you with a bronze trophy.
You have to move the blast bot through the entire Industrial Section while you are being plagued by numerous spydroids, sentinels and roboguards as well as several other blast bots. The small fry are all distracted by the guards who will also be out in force here, so just barrel through most of these while spamming the fire button (). The gun auto-aims for you and fires pretty fast too.
The blast bot has a lot of armor and health so it can take a beating, but the way is long and if you don't keep a tab on the many small enemies you will lose health. The real danger is from other blast bots, take these down before they can get their gun locked on to you. Once you get close enough to the barrier the blast bot automatically blows it up, completing the mission.