Great to read that you liked it! As for those particular routes:
Itch.io always run about 1-2 updates behind on the the Patreon version, so while there are now scenes with Lady Carolyn, they are not yet in this version, but they will be in the next public update (which I hope to release in about 2 weeks).
As for nameless tribesman, that one is a bit more particular, you can reach it by doing the following:
[WARNING SPOILERS]
1) Play through the start, stay in the country, do not leave with Kate.
2) Make poor decisions in preparing for the attack by the horde.
3) When the emissary shows up, decide to kill him (this is important).
Now when the story continues, the war is lost and Sarah is captured. Instead of the emissary saving her, she is taken captive by "nameless" tribesmen.
As for the image in the picture, that one is also rather particular:
1) Play through the soldier story
2) Reach the scene where Sarah is resting in the throne room in Bagrad. Kate will approach, do not invite her to your room. After that, Samayra will be brought out, do not rescue her. After that, you are given a choice to meet a nameless soldier, male or female. The included image is a random male soldier.
Hope that helps!