Some things that were unintuitive at first as a new player:
- Flask: it says it's a consumable, so i thought that when i used it it would be gone and i would have to craft a new one with leather. Which would of course be too expensive for only 15 extra stamina, so the first time i used it was after probably dozens of runs.
- Mageflare Rune: I thought it disabled darkness for the rest of the run. I unlocked it very early, well before having to deal with darkness, so i found it very expensive. So maybe i thought that because the notion of an consumable this expensive that only creates light for a brief moment seemed implausible.
- Violetheart Pendant ("+2 Stamina Regen"): I expected it to affect the regen turn counter, just like regen upgrades. I crafted it specifically to use with Mistral (which has faster regen), found that equipping it didn't change the regen counter size, and thought it didn't do anything because i had hit a cap on regen.
Note that nowhere in the game there is a reference to "stamina regen" as a stat meaning the amount of stamina gained when the regen bar fills, except in the description of the violetheart pendant. While there is a stamina regen stat referring to the size of the regen counter. So i took for granted that you only gain 1 stamina when the bar fills, and that this is not a stat, and that the only "regen" stat is the size of the counter. It should say "regen gives 2 extra stamina" or something like that.
- When i first reached stone (or was it granite? i don't remember), i thought it was water, since the texture looked like water. I didn't know there was water in the game, so it wasn't because i was already expecting it.