Here is the full list of all 39 Outcast - there are Second Contact achievements worth 1,000 gamerscore.
Defeat 250 soldiers.
Help Heza repair his well.
Help Zern fix the boat light by providing a piece of helidium from Motazzar.
Defeat more soldiers to convince Zot to stop paying taxes.
Obtain the Mon in Okaar.
Complete the organ puzzle in Okaar.
Defeat 10 soldiers using dynamite.
Kill the Achondar.
Kill all the gamors in the Okaar arena.
Reach the region of Okaar.
Obtain the Mon in Okasankaar.
Travel 10 times through Daokas.
Unlock the wheel to enter the Darosham!
Talk to 25 important Talans.
Destroy the company of soldiers located in Zorkatraz.
Defeat 150 soldiers.
Help Sadar fix his boat using a Zeedog plant.
Achieve the highest level of reputation by helping the Talans.
Reach the region of Okasankaar.
Set Shamaz Keb free.
Kill 25 Krakits.
Defeat at least 20 soldiers in Motazaar for Ashkar.
Damage the rift bridge to slow the soldiers down.
Reach the region of Motazaar.
Find the Mon in Shamazaar.
Find a Shamaz and convince him to heal Ilott.
A worker at one of the temples wants the Yods to clear away the debris.
Kill the beast in the water behind the temple of Ka.
Destroy the boats in Shamazaar to weaken the soldiers!
Fill your backpack with over 250 rounds for your UZA-SH1.
Defeat at least 20 soldiers for Maar.
Use dynamite on a chest.
Kill the gamors far to the east of the village.
Deliver a Twon-ha for Zolass.
Reach the region of Talanzaar.
Find Shamaz Zeb and speak to him.
Obtain over 300 rounds for your HK-P12.
Complete all four tests with Jan.
Complete the stealth tutorial in Ranzaar with Jan.