18 seems good. 3 grenade variations per focus, 2 Foci per class, 3 classes. 3•2•3=18.
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Isn't there three foci per class though? I would have expected 27.
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I expect there to be atleast 3 indeed. But I think they weren't revealing that in the alpha build.
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You're likely right. Especially since we only had access to one focus in the alpha and I'm sure quite a few things aren't even finalized yet. Three could even be conservative for all we know.
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Exactly!