the map is divided in areas separated by load screens, and if you die(and you will), you dont lose anything but a little bit of time, for you'll respawn in the entrance of your current area.
combat is difficult and it takes quite a while to progress through areas if you plan on killing everything. or you can just rush to the next if you have enough potions, since there is no fog of war and a giant marker on the map pointing to the quest goal.
since you can choose whether or not monsters will respawn when you enter the game, you can progress as slowly as you can, killing a little bit at a time, which is great if you cant play for 2-3h in a row.
all and all, if you ever see it on a 75% sale, its worth trying. wont be as good as torchlight, diablo or titanquest, but might give you some hours of fun.