Well, just a few formatting issues, in each entry you ought to put, "At level X, an Explorer gains ability Y." That way you don't need to keep referring to the table to get the info. Also, you don't need to say "like a rogue" all the time. It's useless in your Evasion, especially considering you already said it stacks with Rogue's evasion.

Finally, do Explorers need to meet the prerequisites for their bonus feats, or are they really Bonus? If they are, I can't imagine anyone taking Endurance. Just skip right to Diehard.