Here is the full list of all 41 Outcast - there are Second Contact achievements.
Finish main mission
Finish all sub-missions
Obtain the Mon in Okaar.
Complete the organ puzzle in Okaar.
Obtain the Mon in Okasankaar.
Destroy the company of soldiers located in Zorkatraz.
Find the Achondar.
Kill all the gamors in the Okaar arena.
Reach the region of Okaar.
Set Shamaz Keb free.
Defeat 250 soldiers.
Help Zernar fix the boat light by providing a piece of helidium from Motazzar.
Defeat at least 20 soldiers in Motazaar for Ashkar.
Damage the rift bridge to slow the soldiers down.
Travel 10 times through Daokas.
Help Sadar fix his boat using a Zeedog plant.
Unlock the wheel to enter the Darosham!
Defeat 150 soldiers.
Achieve the highest level of reputation by helping the Talans.
Kill the beast in the water behind the temple of Ka.
Talk to 25 important Talans.
Reach the region of Motazaar.
Help Heza repair his well.
Reach the region of Okasankaar.
Defeat more soldiers to convince Zot to stop paying taxes.
Reach the region of Talanzaar.
Destroy the four boats in Shamazaar to weaken the soldiers!
Find the Mon in Shamazaar.
Defeat 10 soldiers using dynamite.
Find a Shamaz and convince him to heal Ilott.
Use dynamite on a chest.
Kill 25 Krakits.
Defeat at least 20 soldiers for Maar.
A worker at one of the temples wants the Yods to clear away the debris.
Fill your backpack with over 250 rounds for your UZA-SH1.
Kill the gamors far to the east of the village.
Deliver a Twon-ha for Zolass.
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.