Pyroth in Molten summit, Ancient Cyclops and Nyxarion the dragon are the three easier world bosses, getting geared up from them will help. Also the fabled section in the lizard man den is pretty easy with some decent loot dropping from there.
There's a multitude of stupid shit they put in / leave out, like food and drink as if this is some kind of survival game, which will of course tie in to the future hygiene/poop features (yes really), and lets not forget these futuristic ships that shoot lasers and have shields that somehow don't...
Oh it's very real, and worse than I originally described because I forgot to mention you also have to keep a fire extinguisher handy because fire will spread like your metal ship is made out of fuckin dry hay.