This is a Story related Achievement and cannot be missed. This will unlock at the end of mission before cut-scene that takes you to next level.
This is the last flying level of the game and it is quite short. Besides bad guys to shoot down there will be large yellow lasers interrupting your flight path so be sure to avoid them.
When you reach the massive ugly door that's in your way, shoot at the yellow domes first while killing bad guys. Avoid any obstacles like large pipes or death rays. You will encounter a Manhunter Ultra and this would be a good time to use your Ring Surge to blast him away quicker.
Continue down tunnels shooting enemies and any yellow domes on blocking walls. There not much to this mission it's quite self explanatory.