This can be brutal, and DayZ makes no concessions towards new players – or even somewhat experienced ones. In part this is down to a desire for purity, so a character will be constantly telling you they’re thirsty but there’s no such thing as a ‘hydration meter’. Laudable as this is, it means that some of the game’s complexity is buried in a frustrating manner.
You might think that thirst can be solved, for example, by drinking a can of soda. In fact this will make a negligible contribution to your character’s dehydration, though it will increase their energy (a ‘hidden’ mechanic) – because soda’s full of calories. Nowhere does the game explain this, and the mod’s various useful meters have been replaced with frequent lines of text: ‘I need to drink’, or ‘My stomach grumbles violently’ and so on.
But the absence of visual guidance isn’t the problem – it’s the lack of any guidance. Want to quench that thirst by drinking water from a well? You better boil or purify it first, for which you need containers and equipment, otherwise illness could await. Oh and don’t just take one drink – you need multiple.
These survival elements are a massive leap in sophistication over the original mod and, to be crystal clear, I think this kind of depth is what makes DayZ fantastic. But things like the differences between drinking soda and drinking water are only clear through a bunch of trial-and-error or googling, and I don’t think giving players some basic guidance towards obvious and hidden mechanics would be a bad thing. The balance also seems a little askew at the moment, with your character constantly thirsty regardless of how well-hydrated you keep them, but this is the kind of parameter that can be easily tweaked.