There are different tiers of weapons you can use in Tiny Tina's Wonderland and the strongest of these are the Legendary Weapons. This Legendary Weapons guide lists all the Legendary Weapons in the different categories and tells you which are the best ones to get your hands on.
Lil K's Bread Slicer (Stoker)
Manual Transmission (Stoker)
Borea's Breath (Feriore)
Blazing Volley (Hyperius)
Fragment Rain (Feriore)
Shadowfire (Feriore)
White Rider (Dahlia)
Wizard's Pipe (Hyperius
Apex (Dahlia)
Boniface's Soul (Feriore)
Masterwork Handbow (Blackpowder)
Perceiver of the Peak (Dahlia)
Queen's Cry (Stoker)
Aphotic Antique Greatbow (Hyperius)
Dry'l's Fury (Stoker)
Gloomy Carrouser (Blackpowder)
Practiced Envy (Blackpowder)
Crossblade of Discipline (Blackpowder)
Reign of Arrows (Blackpowder)
Cannonballer (Torgue)
Sawblades (Wyrdweaver)
SkullantirThreads of Fate (Arken)
Twister (Conjura)
Barrelmaker (Arken)
Buffmeister (Miraculum)
Gelatinous Cube of Eminence (Conjura)
Inflammation of the Marked (Wyrdweaver)
Diamondguard Sword (Swifft)
Fatebreaker (Valora)
Frying Pan (Bonk)
Goblin Pickaxe (Kleave)
Ragnarok (Torgue)
Slammin' Salmon of Mirth (Bonk)
Snake Stick (Kleave)
Spellblade (Swifft)
Twin Soul (Swifft)
Content to come...