I've played enough to get all of the upgrades and five of the scenes. Dunno if there is anything else hidden.
Some remarks I'll include the sprint and weight system. When the game offered up storage as an upgrade, my immediate thought was the slots and their maximum capacity. Thus, when I started slowing down to a near crawl, then to a complete stop while walking, I thought it was a bug. Some basic trial and error revealed the mechanism. It certainly offers up a niche risk/reward system on top of everything present. Which brings up the sprint. I dunno how it is meant to function in accordance to the weight system. But either through hopping or running, I'm able to move at top speeds no matter the inventory weight. Though still at the cost of sprint meter.
The Smexy scenes were pretty decent and allowed for some customization I wasn't expecting towards the end.
My only real criticism is the lack of the ability to change key bindings. Thinking about it now, I might be able to change that myself.
Overall, it makes for a very promising proof of concept. Especially when scratching the currently popular extraction style of game. I wish you luck and look forward in seeing how this game progresses.