* Don't block the Titan's path and don't put the guns too close to the path.
* Use "Scarecrow" to guide the titans to the path you want , don't put Scarecrows too close to the path or use too many. @4:25
* Build "Disruptor" @ 2:50 near spawn point at a safe distance with one "Scanner" , one "Scarecrow" and some walls.
* Don't place too many walls , space them out a bit and keep some for later on.
* Build "Rockets" @3:50 after "Disruptor" in a clear area , don't build anything in its attack radius , it will blow up your buildings. and Don't use a scanner with it , you will lose map space if you did.
* Don't forget your supplies. build more "Refineries" at all times and sell the unused ones! @6:55
* When you have enough money build a "Tank Factory" @7:05
* Since you have your Turrets at a safe distance to avoid zig zaging bosses , use a "Scanner" for range boost. @4:40
* Build a "Laser" @5:15 in the front line of your turrets to laser the Titan's coming in a line.
* Don't be afraid to lose some buildings but not too many :P. try not to lose your "Disruptor" , "Rockets" and "Laser" at the beginning.