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