so i got 1 heart with roushk, is there a new scene with him (the nsfw repeatable one like sleeping with rhot kind of thing)?
if you have finished the nightmare event (good end at least) you can trigger the celebration if you go to the ruins 3 days after you give one of the orb to the cthulu (if you haven't done the cthulu part, just sleep till morning and if you woke up in the middle of the night check outside and you'll meet him). And then return the other orb to roushk and return 3 days after that and make sure to be there before 16:00, (when there were options to talk with some people, i advise to talk to everyone before you talk to othra othra in the celebration to increase their likes) when you talk to her, be honest that you admire roushk (don't worry, she's cool about it and even told you to do "it" with roushk), and after the celebration end, you'll see roushk stayed at the middle of the pond and ask you to stay behind. If you say yes then you'll gain 1 heart with him (but someone will wait for you at the riverbank)
Well i did met him in the fair but lose in the wrestling match. On nightmare 2 i got best ending i guess (rhot did talk to me after that quest so i think it's best ending?) And i gave the green gem back to roushk, also because rhot was there at the end maybe you need to have 1 heart with him, maybe. I don't know if any of these will help but as far as interaction with lizard tribe goes, these are the things that i did