here's my seasonal boot sequence for terraria: 1) it's halloween. harvest pumpkins and make pumpkin armor (7 points of defense). 2) start digging and get to the caverns. you're looking for gold chests and the mace. fairies led me to two maces and a dozen crystal hearts within a few hours of starting. 3) upgrade the mace to a flaming mace (18 damage). 4) mine platinum or gold (whatever your world has). as soon as you have enough ore, craft platinum (20 defense) or gold (16 defense) armor. 5) pick off your first boss—either the eater of worlds or the brain of cthulhu. you need their drops in order to craft the nightmare or deathbringer pickaxe, which can mine hellstone and obsidian. 6) build a hellevator, break into a ruined house and mine hellstone. there's usually some near the walls and if you are careful you can dig shafts into the ash—but think about where the released lava will flow. you'll probably need a few recall potions (of which you'll have found plenty) to pull this off. 7) back in the caverns, dump water on lava lakes to create obsidian. mine it. 8) craft molten armor (25 defense), a fiery greatsword (40 damage), and whatever else you like.