You need to dispatch with the three grippli keeping watch but you cannot do that in the camp or you will almost certainly get attention.  Therefore, your only real option is to lure them out and eliminate them somehow while they're away from camp.  Even if you do lure them away from their camp though, three grippli are more than a match for you so you are going to have to construct a trap of some sort.  You remember seeing a small drop off in the middle of the path you just came down and that gives you an idea. 

 

 
You take about a dozen of your arrows and plant them firmly in the ground (arrowhead up) at the bottom of the hole you encountered along the path.  You only lightly cover it with what little large leaves and vines you can find, then cover this foliage completely with sand and small rocks (enough to cover the vegetation but not enough to make it fall into the hole).  Your hope is that you will be able to lure your three grippli out here away from the camp and then fall in on top of your arrows.  The only thing left to do is figure out how you are going to lure them away from the camp without them alerting the camp as well.

 
You decide to mimic the sounds of the small prairie dog like creatures out here and toss small pebbles around the corner where they would see them.  You seem to have their attention as they are too bored to really entertain themselves with anything else.   Unfortunately, the prairie dog gag isn't enough to make them come so next you imitate the sound of a ewe while making loud pawing noises at the ground.  For whatever reason, this one gets their attention and they start approaching quietly with their weapons drawn. 

 

You continue making animals noises but move back slowly at the same time.  At point for them is a hunter brandishing a bow.  The other two apparently believe in the sword.  Maybe that's not as atypical for a grippli as you thought.  You are careful to remain unseen but back up slowly and continue leading them forth with animal noises.  Eventually the game is up as the hunter seems to get suspicous and notices you are there.  You turn and run using the indentations in the rockwall to your right to help protect you from arrow fire.  You take your position behind a rock on the other side of the trap and to your glee they are running straight for it. 

 
YES!  The sound of your cover giving way under their weight is music to your ears, as are the ribbits of pain emitted shortly thereafter.  You surmise they are dead until one of them jumps out of the pit with only a leg wound.  He pulls out his sword and glares at you.  You feel like facing him like this, it would be an even match.  Still, you would much prefer some kind of advantage whereever you can get it.  You draw your sword and begin to think carefully about how this is going to go down.

You don't Waste Time With Elaborate Trickery, Just Fight The Thing

There is no longer any element of surprise so the time for elaborate tricks is over.  You are simply going to have to face this thing one on one.  At first things seem to go well.  His 2 foot tall stature is no match for your strength (which is saying a lot coming from you) but he is fast as hell.  Given that he's part frog he's hopping around behing you, above you, between your legs, all with the speed and reflexes of a frog.  You've always wondered what made people consider these things to be so dangerous.

 
 
 

 
In the end, you've taken on more stab wounds than you can possibly handle and drop to the ground looking like one of Freddie Krougar's victims.  The 2 foot little froggie bastard develops a new air of pride and marches back to camp, no doubt to brag to his friends about his new victory.  But for you it is simply...

 
THE END