Start the mission by fanning out all five rounds towards the teal tank directly opposite you. In the above video, I didn’t execute this very well with a fan that is too narrow. But still, it was wide enough to have the effect of trapping it into a corner (see General Strategy against Teal Tanks). Whatever the case, be cautious of your own shells rebounding from the far wall!
The rest of this mission can be carried out following the General Strategy against Teal Tanks
Next: Mission 8