On College Kings 2 (NSFW), I was the Head of Narrative for Episodes 4 & 5, and Episode 6. My duties included:
Leading the writers' rooom
Writing scenes
Coding scenes using Renpy
Reviewing scenes written by my fellow writers: revising text, fixing programming, and making any necessary edits to ensure a matching tone throughout the game
Game Design: Proposing ideas for engaging mechanics that complimented the story
Narrative playtesting: Finding and fixing bugs, as well as continually tweaking story/dialogue
Prototyping new IPs alongside the CEO, before pitching said IPs to other department heads as potential projects
Writing trailer scripts and various bits of marketing copy
Working alongside the marketing team to find ways to increase company revenue
Adding Steam achievements
Notable moments included quickly learning the position of Head of Narrative after the previous one quit, and delivering the game's final episode after massive internal upheval on an incredibly tight deadline.