I think I caught all the options where your choice affects Sigma’s survival if you go with him. I will wrap the entire guide with the spoiler tag.
Guide to Save Sigma
💀 = Will increase Sigma’s death counter (Will push him towards death)
⬜ = Will not affect his death counter (Will not increase or lower it)
✔️ = Will lower Sigma’s death counter (Keeps him alive)
Chapter 2
1. Context: When Kaus reveals that Sigma used to be an Apostle
*choice
# “I can’t believe Sigma worked for these guys. He’s awful” 💀
# I mean Sigma is working for our side now. That most likely means he defected for a good reason. ⬜
# “I’m still trying to understand what the hell is going on.” ⬜
Chapter 3
2. Context: When you’re in the car with Sigma, Anja, and Uri. You’re given the choice to agree with Sigma or tell the truth about his lie
*choice
#Agree with Sigma ⬜
#Tell the truth 💀
If you skipped to Chapter 5, you will be given an option:
Did you expose Sigma’s fib in the car?
*choice
#Yes 💀
#No ⬜
Chapter 6 with Sigma
3. Context: Sigma is nervous about before the start of the mission and you’re given a choice to encourage him.
*choice
# Encourage him ⬜
# Don’t encourage him 💀
4. Context: You’re about to fight your first zombie in the Shelter in the bushes.
*choice
# Ask Sigma to deal with it 💀
# Whistle to bait out the zombie 🖥️ (Strength + Wits > 40)
# Quickly slash the zombie 🖥️ (Charm + Agility > 40)
# Call out to Alter Ego 💀
5. Context: You’re given a choice to take the envelope from the corpse.
*choice
# Take it 💀
# Don’t take it ⬜
6. Context: You had a sudden vision and got woken up by Sigma.
*choice
# “I had a vision. I think I died.” 💀
# “Don’t worry about it.” ⬜
# “Can I hold your hand?” ⬜
Someone knocks on the door. The next choice gives an increase to some of your stats.
*choice
# You waited for the man to break through the door and strike (Increase Strength and Wits +5)
# You opened the door and caught the intruder by surprise (Increase Agility and Charm +5)
7. Context: You’re in the sewers with Kassan, Nova, and Sigma. You thought you saw something.
*choice
#No. There was something definitely there. ⬜
#They’re probably right. It doesn’t help to be this tense. 💀
8. Context: Your character comes to an epiphany inside the building with Kassan.
*choice
# I didn’t ask for all of this ⬜
# The idea of fate is stupid ✔️
# Is everything my fault? ⬜
9. Context: You’re in a fight with Sigma.
*choice
# Block 💀
# Jump ⬜
10. Context: Sigma is holding you by the neck
*choice
# “Sigma. I’m your leader. Put me down.” 💀
# “You’re not a bad guy anymore. Remember?” ⬜
# “I made a promise for you to get your memories back.” ⬜
11. Context: You’re in a battle against Schedar and he asks you a question.
*choice
# “To save humanity.” 💀
# "For myself. In order to survive." 💀
# “You think I want to save this world?” ⬜
# "For my friends." 💀
# "Two strangers told me to, that's why." 💀 <= This is a mistake (Supposed to be ⬜, will be fixed next update, for now, avoid this option)
12. Context: You and Sigma are surrounded by poison mist when a figure strikes at you.
*choice
# Counterattack 🖥️ (Strength > 35)
# Dodge it 🖥️ (Agility > 35)
# Ask for backup 🖥️ (Charm > 35)
13. Context: When you’re about to stab Schedar
*choice
# “You were a worthy opponent.” ⬜
# “Fuck you Schedar” ⬜
# “This is for Sigma” ✔️
# “No words are needed” ⬜
That’s the end of it. If the counter is 3 or higher, then Sigma will die. Otherwise, he’ll live. Avoid the skulls, try to pass skill checks, and go for the green checkmarks when possible.