Just wish to add the the other guide that is on here, if you like Fighter squadron mode keep plugging away at it for the Tie Fighter model. the A.I. ship kills in this mode count towards your 150 kills required. so if you concentrate on those more (its the ones that dont have a GT next to them when targeted) you should be able to rack about 15 - 20 kills a match. this translates to about 8 - 10 matches to complete. as a point of reference i popped this achievement having just got to level 8 with two walker assault matches under my belt