Lightly armored, but dextrous, buckler, small sized and with some natural.
Also, jungle and cover combined (+6) to make it hard to hit him with ranged attacks or with reach-weapons when he is behind cover.
Normally they move 30; you don't know this of course, but his half speed means he can move 15/round through the jungle terrain. With a double move, you can be almost right on top of him, i.e. 10 feet away, which means that its pretty much over for him, unless he has tumble, he wouldn't even be able to withdraw without provoking AoO.
None of you asked for knowledge nature or knowledge local checks to evaluate their capabilities so I have only given the obvious details.
Jungle, not in Xendrick, so that should limit the choices somewhat. After this encounter and a follow up encounter we will flashback to why you are where you are and what your mission entails.
I wanted to jump right into a fight, 1) to let you try-on the PCs to see if there is anything that just doesn't work, where your weakness are etc. 2) to give everybody a chance to post, letting me know how fast people respond, and 3) to provide a framework for setting up your out of combat encounters: This way I won't really have to rail-road you. You know that eventually you have to go from a to b, HOW you get from a to b is all your guys' game.