Blow the barrels that contain explosives or toxic elements to get closer to the main villain of the level. Place your bombs smartly and don't get damaged by explosions or the blaster that your enemy carries.
Superheroes often have complicated missions and they risk their lives to maintain peace and quiet of the simple people. But fractals shards are the element you should not ignore and you should bring them back to the possession of the right hands. Enter the vault and face Doombots that guard shards you are looking for. Defeat them in the battle and return the shards.