very nice game indeed! and it isnt easy eather (yes i did beat it! yay me!) anyways on mission 6 the beam frigates seem to for some reason have trouble locking onto the radiation cloud. my fix was to fly them around it randomly until they did lock on (each one locked on at a different point) it took a while but it worked. oh and remember to keep some fighters with them for defence too! the beam frigates die pretty easy without protection. targeting wasnt realy much of an issue except that once the ships have locked onto somthing they wont unlock from it until its destroyed or they get too far away from it. other then that it was ok. oh on mission 10 you might want to ever so slightly reduce the ammount of enemies thrown at the player (that or reduce the range on the enemies beam destroyers) as i was getting shot at from half way across the map and could barely cope with it.