great visuals and voice acting, chapter select, manual saving anytime, random autosaves. only 3 slots, the autosave indicator is practically unnoticable and it doesn't save on exit on its own, far from perfect.
textures only show properly on the 'epic' graphics setting, making the game unplayable otherwise, as critical information is simply not visible. only a global gfx quality setting is bad enough and inexcusable when it literally breaks the game. and with any dpi scaling enabled (bigger text in windows, etc.), can't change resolutions or fov. performance really tanks starting with chapter 3, guess by then they gave up on what little optimization happened.
settings are resolutions, windowed mode, v-sync, field of view, brightness, separate volumes, rebindable controls, invert y axis, sensitivity, vibration, spoken and subtitles languages. then toggles for a crosshair, easily readable journal font, barely noticable, mostly useless hotspot indicator, smooth camera rotation, head bobbing, flashing lights, closed captions, motion blur.
an always run setting would've been necessary, and better journal navigation and document examination instead of always having to zoom in and click 'read' for a non-handwritten version even if the readable journal font is on. crashing a few times in chapter 6 was also a concern and cause for frustration.
puzzles are a mixed bag at best, the end of chapter 3, the constellations in chapter 6, and simon says in chapter 4 being the low points. turning on close captions shows the simon solution, so there's that. there are timing-based puzzles in chapter 5 too, the dreaded underwater level, and no puzzle skip.
exploration is hindered by performance, the useless hotspot indicator, controls and slow movement even with sprint (when it's available). unskippable credits too. bring up the menu and leave, but then no post-credits scene for you, and with 2 endings, gotta watch the whole thing twice (or just youtube it).