- Author's Saving Throw: As detailed under Scrappy Mechanic, the travel system was by far the least popular part of the game. The devs took note and used the very first patch to introduce a proper fast-travel system that lets you jump to any location you've already visited. If you're en route to unknown reaches, attempting to fast-travel there will get you as close as possible on the rivers you've explored before. Needless to say this was a very well-received addition.
- Crowning Moment of Heartwarming: Taking Yazi and Sya to Renaki, even after they stole your ship, potentially knocking you out to do so. When you part ways, Yazi comments that Aliya and Sya look like they could be sisters, to which Sya replies:[to Aliya] You saved my life. You are my sister.
- Funny Moments: Aliya finds an inscription on an overturned minecart. At first she thinks the symbols are like none she's ever seen before... but then Six reminds her that the cart is upside-down.
- Most characters including Aliya have some very over-the-top facial expressions, and there's rarely an actual correlation between them and what the character is saying/doing at that moment. Seeing Aliya angrily shouting while she's merely musing about the meaning of something feels... strange, to say the least.
- Aliya's character design, while completely fine overall, still comes across as off-putting due to the red rashes on her hands and face. Her bruised hands can be justified by her profession as an archaeologist, but the ones in her face (specifically, her nose) make her look like she caught a really bad cold. Not even learning about her pulmonary disease can change much about that.
- The Scrappy: Six may mean well, but its constant whining about Aliya's exploring (in other words, what most of the game is about) gets annoying fast... and it gets a hundred times worse once Enkei takes over and starts insulting you every chance she gets. The devs probably suspected how badly some players would react to this when they implemented the possibility to sell Six off to a shifty robot trader.
- Scrappy Mechanic: Sailing the rivers has been universally decried as tedious and boring by players and critics alike. Travelling to distant places can take up to ten minutes during which you can't do anything but steer left or right. The wonky nav system doesn't do the feature any favors, and the lack of a fast-travel system means you'll be spending at least half your play time sailing the same routes over and over again. Fortunately, this was (mostly) fixed with the first patch barely a week after the game's release.
- Squick: Timor's constant attempts at Wife Husbandry are as disgusting to the player as they are to Aliya herself.
- Take That, Scrappy!: Finally getting rid of Six by selling it off can feel immensely satisfying.
- What Could Have Been: According to the devs' official blog, Tapi, Huang, Timor, and Oroi were considered as potential romances at some point in development.
YMMV / Heaven's Vault