Ignore enemy ships until you have clear airspace as they are not as damaging as missile batteries.
Losing 10% Health
It is vital that you do not let the enemy robots get to the far right or you will instantly lose 10% of your health.
Missle Batteries
A good strategy to safely destroy the missle batteries is to drop off in a safe place where you have to walk for a few minutes to reach them and then destroy them. It is safer destroying them from the ground than it is from the air.