From what I've seen of my brother playing (He's an Inf, but I'm a grunt), one of the best things to do as an Inf is get up on the enemy base's walls. About 1/3 of the time, you'll die before you can get there, but if you can get up, it's a Melee Booster/Boomer Inf's heaven: Snipers and MAXes are so easy you almost feel sorry for them... almost
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