Lemme upgrade my list because that one was like 2 years ago, lol.
EoC - a bow with flaming/frostburn arrows or Space Gun.
King Slime - a bow with flaming/frostburn arrows, Space Gun or Minishark.
EoW - grenades, Waterbolt (if I get lucky) or a bow with Jester's Arrows.
BoC - bow with piercing arrows, Space Gun or Waterbolt (if I get lucky).
Queen Bee - Space Gun, Waterbolt, Boomstick or Phoenix Blaster.
Skeletron - Space Gun, The Bee's Knees, Bee Gun or Molten Fury.
WoF - Beenades, Waterbolt, Bee Gun or Hellwing Bow.
Destroyer - Daedalus Stormbow, Nimbus Rod or Meteor Staff.
Twins - Megashark or Onyx Blaster with ichor/crystal bullets. Eventually I use a Clockwork Assault Rifle.
Prime - Megashark/Onyx Blaster/CAR with ichor/crystal bullets or Daedalus Stormbow.
Plantera - Megashark/Onyx Blaster with ichor/crystal bullets, Terra Blade or Light Discs.
Golem - Nail Gun, Terra Blade or some other explosive weapon.
Duke Fishron - Possessed Hatchet, Flairon (if I get it after the first kill), Daedalus Stormbow.
Lunatic Cultist - Possessed Hatchet, Flairon, Razorblade Typhoon or other homing weapons.
Moon Lord - Solar Eruption, Daybreak, Nebula Arcanum or Vortex Beater with chlorophyte bullets.
Mini bosses:
Goblin Summoner - any gun or ranged weapon.
Flying Dutchman - a yoyo or something that shoots through walls.
Martian Saucer - Daedalus Stormbow, Meteor Staff or a yoyo.
Mourning Wood - anything that pierces or Electrosphere Launcher.
Pumpking - Electrosphere Launcher, Possessed Hatchet or Flairon.
Everscream - the same as Mourning Wood.
Santa-NK1 - Electrosphere Launcher or anything explosive or piercing.
Ice Queen - any decent beam sword or homing weapon.
EoC - a bow with flaming/frostburn arrows or Space Gun.
King Slime - a bow with flaming/frostburn arrows, Space Gun or Minishark.
EoW - grenades, Waterbolt (if I get lucky) or a bow with Jester's Arrows.
BoC - bow with piercing arrows, Space Gun or Waterbolt (if I get lucky).
Queen Bee - Space Gun, Waterbolt, Boomstick or Phoenix Blaster.
Skeletron - Space Gun, The Bee's Knees, Bee Gun or Molten Fury.
WoF - Beenades, Waterbolt, Bee Gun or Hellwing Bow.
Destroyer - Daedalus Stormbow, Nimbus Rod or Meteor Staff.
Twins - Megashark or Onyx Blaster with ichor/crystal bullets. Eventually I use a Clockwork Assault Rifle.
Prime - Megashark/Onyx Blaster/CAR with ichor/crystal bullets or Daedalus Stormbow.
Plantera - Megashark/Onyx Blaster with ichor/crystal bullets, Terra Blade or Light Discs.
Golem - Nail Gun, Terra Blade or some other explosive weapon.
Duke Fishron - Possessed Hatchet, Flairon (if I get it after the first kill), Daedalus Stormbow.
Lunatic Cultist - Possessed Hatchet, Flairon, Razorblade Typhoon or other homing weapons.
Moon Lord - Solar Eruption, Daybreak, Nebula Arcanum or Vortex Beater with chlorophyte bullets.
Mini bosses:
Goblin Summoner - any gun or ranged weapon.
Flying Dutchman - a yoyo or something that shoots through walls.
Martian Saucer - Daedalus Stormbow, Meteor Staff or a yoyo.
Mourning Wood - anything that pierces or Electrosphere Launcher.
Pumpking - Electrosphere Launcher, Possessed Hatchet or Flairon.
Everscream - the same as Mourning Wood.
Santa-NK1 - Electrosphere Launcher or anything explosive or piercing.
Ice Queen - any decent beam sword or homing weapon.