I noticed that lvl 35 expert was seriously hard and it took me a while to do so ill write a walkthrough for it. you have to have full upgrades.First get a super tower on the lowest corner at the end of the map and upgrade it twice.Then summon all waves by holding N and use the small bombs first a little bit in the middle of their group until you build up 600 or 700 money. Then shoot the bombs at a corner where they are just starting to round it should be the first corner of the track.There should be a few weakened tanks getting through your bombing this means your bombing correctly. The when you get roughly 10000 money you should start losing money while bombing, now is when u fully upgrade the super tower. Continue bombing. when you see that the tank group starts thinning out bomb a little less hard an let your super tower take on more tanks. the rest is more guess work, try to just weaken the enemies and kill the ones that got away from your tower.
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