guaranteed pass wave 100 every time
put 3 soldiers (special ops if possible) at each top corners... remove their grenades.
put as many snipers as you want below
take an engineer and build sands bags around the top soldiers
enjoy
i just put 10 snipers right below and 6 soldiers with shotgun on top left and right
no artillery strike can hit me as they cannot detect snipers and keep hitting on their own men..muahhahaha
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