"The Ultimate Tank" - Get more than 150 defense
"Ultra Terror" - Get to wave 10 of Pumpkin/Frost moon with only a Terra Blade
"Taste the tainbow, mother
er!" - Get meowmere
"Much lazors, such wow" - Get Laser Machinegun
"Lazors vs. Lazors" - Kill the Twins with a Laser Machinegun
"I didn't even touch him..." - Kill any boss with just the Thorn effect
"public static string GetText(string text) { return text; }" - Write valid C# on a sign
"Where did my leg go?" - Get killed by using a Rod of Discord too much
"ZZZZzzzzzz... Hey! where's everybody?" - Get any boss killed by only using DoT debuffs
"MUST. NOT. FAP!!!!!!!!!!!" - Get Master Bait
"U GOT REKT" - Kill any boss in one SINGLE shot (this one does NOT count piercing)
"360 noscope" - Kill any mob off-screen with a Sniper Rifle
"OMG! That was so close!" - Deliver the final blow to a boss while you have only 1 HP left
"NUUUUUUUUUUUUUUUUUU" - Get killed by a boss while he has less than 100 HP remaining
"U GOT REKT II" - Get one-shotted by a player in PvP
"U GOT REKT III" - One-shot a player in PvP
"U GOT REKT IV" - One-shot a player that has more than 100 defense in PvP
"U GOT REKT V" - One-shot a player that has more than 150 defense in PvP
"The Ultimate Tank II" - Survive a hit from a Dungeon Guardian
"Moneygrabbing much?" - Get 999 platinum coins