Dr. Awkward said:DM: Wow, you guys got your butts kicked. Perhaps you should rethink you strategy.
Players 1, 2, & 3: If only there were some easy-to-understand index of what the various classes are capable of and good at so we could adjust our strategy accordingly and/or choose classes that suit our preferred playstyles!
Players 1, 2 & 3 cont.: ... Because we had absolutely no idea that a "fighter" fights, a "rogue" is a sneaky thief concept, and that a "cleric" has many magical healing options via spell-thingies. Yes, for us, an easy-to-understand index would be invaluable.
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Not sure that was the point you were trying to make, but it's valid just the same.