Project Lamordia related - Lamordian Survivors beyond 3rd level

Hello.  First time posting here.  Not sure if this belong here, but if not, i can delete it and ask it where it belong.  Also been like more than 15 years since I played DnD, so not familiar at all with the current rules (only played the red/blue box and ADnD 2nd Ed back in the good old days).  Anyway, here it goes:

I love the idea of DnD exploring modern horror with Project Lamordia, but just by my personal oppinion, I think the heroic and powerful PCs that is popular in DnD may not mix with some aspect of horror.

I think the Project Lamordia digital content kind of realizes this, and gives the option of creating Lamordian Survivors, a low power, almost no magic PC to be used from level 1-3, to enhance the survival horror in the narrative.  My question is if there a way to play these Survivors beyond 3rd level?  Like, is there a way to play a "normal" human being in DnD beyond 3rd level?  Maybe with a short term goal of finishing all three of the adventures in the latest document as survivors.

I guess this will lead to expanding the Survivor Talent list, but anyway, was wandering if the current rules gives these options of playing not so powerful PCs.