Simple: Kill EoC, then King Slime, then BoC/EoW in the crimson/corruption, kill Queen Bee, Kill Skeletron, defeat all possible events in pre-hardmode, get all possible NPCs too, make final preparations before WoF including farm making and fishing for crates (but not open them until hardmode), kill WoF. Get hardmode ores (preferable from crates without smashing altars), face Old One's Army (this can be done even on pre-hardmode but certain boss will not spawn yet) and Solar Eclipse events, kill Mech Bosses, kill plantera, farm in the dungeon again, attempt Frost Moon and/or Pumpkin Moon, kill Duke Fishron, Kill Golem, finish Old One's Army (all bosses are now available) and any other possible event including Martian Madness, kill Lunatic Cultist, kill pillars, kill Moon Lord, kill the player through suicide, kill Terraria by uninstalling it. Kill yourse...<message has been terminated>
Long Version: My preference is to go to Corruption/Crimson asap, break Orbs/hearts until a meteorite spawns, get enough meteorite ore for the full space armor + space gun (makes me OP for the rest of the game until WoF). Roam the entire surface of the world then make a base somewhere in the middle of the map, just below the ground but preferably still above underground layer. Make an all-purpose arena above my base. Place chests in all areas I don't want meteorites to land on. Kill EoC. Go back to crimson/corruption and defeat the boss, make a farm there and dig a trench around the entire biome to prevent the spread of infectious blocks. Kill King Slime. Go to the jungle and farm Queen Bee until I get The Bee's Knees and/or the Bee Gun, make sure I also get the bee mount, then make a jungle farm and also locate the jungle temple. Look for floating islands and loot them, make an NPC house there since they cannot be attacked by monsters if they are far from the player, make a skybridge out of platforms. Kill Skeletron and explore the dungeon while taking ALL of the water candles, make a farm there. Explore everywhere else and try to get all NPCs I can. Make a fishing base and every other farm I would need BEFORE hardmode including an ocean treasure map farm/key farm (for dungeon chests). Fish for lots of crates. Make final preparations before WoF including making all farms I need and beating all pre-hardmode events. Go to hell, make a base and a farm, make a runway for fighting WoF. Kill WoF with Bee Gun and/or The Bee's Knees (Best weapons for WoF, switch from Mage to Ranged when mana is low) while using Crimson/Molten armor. Open all crates I have, make hardmode armor and weapons from all the hardmode ore I've gotten from the crates (no need to smash altars), dig a trench round ALL infectious biomes to segregate them and make farms in the hallow, attempt to get more NPCs, add teleporters to all my farms etc, go back to all my farms I've made in pre-hardmode and collect what I need, attempt Old One's Army and Solar Eclipse, Kill Mech Bosses, kill plantera and get chlorophyte, make chlorophyte farms. Farm in the dungeon again and open chests, farm Frost Moon and/or Pumpkin Moon, make an ocean arena and attempt Duke Fishron once I have good weapons (preferably snowman cannon) and farm him until I get Razorblade Typhoon, go to jungle temple and make an arena to farm golem, finish Old One's Army, farm Martian Madness until I get Scutlix. Beat Frost and pumpkin moon. Kill Lunatic Cultist, pillars and moon lord.