Just finished my first playthrough. What now?

Just finished my first full playthrough - took me about 40 hours (I bought the game last week - I have played at every possible moment)

Really really enjoyed this. Went in knowing nothing, didn’t let myself get any spoilers, and think that was the best way to do so.

However, I found the deserter on day 5. I think this means I beat it pretty quickly? I tried to engage with side content and stuff, but I think I felt like the tribunal meant I only had 5 days in the first place.

Should I do a second playthrough? Are there secrets/achievements I could search for to give me a goal beyond just engaging with different stuff??

(For the record, in my playthrough I tried to focus on talking to people/wmpathy, rather than physical skills - I got shot during the tribunal, but managed to save Kim. Think I got the “best” ending?)

Do let me know what you guys did with second playthroughs, what changed etc.