First destroy those kamikaze ties (call your wingmen for help - 4 waves), you will have some problems with other ties (again, call wingmen for help). Inspect transports for bonus points (but avoid flying too close). You can fire at them from time to time - B-Wings should take care of them
I've finished this mission with EASY and MEDIUM d.l. on. You'll have some probblems on MEDIUM (now, HARD is implossible for me).