OK, I've spent time working on creating new loadout guide pages since a couple were shown up, and now, presently, most of them are blank. I'll provide links to them, but the pages will need filling, as that task is one I cannot do alone.
This, of course, includes those that have info, but there's some that aren't complete.
That said, here are the, as of now, loadout pages' links... I warn you this, Wiki Knights, it is way long.
Level Stratum loadout links:
http://wiki.spiralknights.com/Royal_Jelly_Palace/Loadout
http://wiki.spiralknights.com/Battle_Arena/Loadout
http://wiki.spiralknights.com/Starlight_Cradle/Loadout
http://wiki.spiralknights.com/Ironclaw_Munitions_Factory/Loadout
http://wiki.spiralknights.com/Gloaming_Wildwoods/Loadout
http://wiki.spiralknights.com/Compound/Loadout
Mission Loadout links:
Rank Missions:
http://wiki.spiralknights.com/The_Ancient_Generator/Loadout
http://wiki.spiralknights.com/Crossing_the_Chasm/Loadout
http://wiki.spiralknights.com/A_Revelation_in_Flames/Loadout
http://wiki.spiralknights.com/Angels_from_Antiquity/Loadout
http://wiki.spiralknights.com/The_Phantom_Mask/Loadout
http://wiki.spiralknights.com/The_Collector/Loadout
http://wiki.spiralknights.com/Alien_Ooze/Loadout
http://wiki.spiralknights.com/Toy_Soldiers/Loadout
http://wiki.spiralknights.com/Faith_in_Armor/Loadout
http://wiki.spiralknights.com/Strength_in_Unity/Loadout
http://wiki.spiralknights.com/Blades_of_the_Fallen/Loadout
http://wiki.spiralknights.com/Shadow_of_the_Beast/Loadout
http://wiki.spiralknights.com/Oilers_in_the_Boilers/Loadout
http://wiki.spiralknights.com/Frostifur_Fandango/Loadout
http://wiki.spiralknights.com/Rescues_and_Recycling/Loadout
http://wiki.spiralknights.com/Shocking_Sentient_Sentries/Loadout
http://wiki.spiralknights.com/Chilled_to_the_Bone/Loadout
http://wiki.spiralknights.com/Work_for_Idle_Hands/Loadout
http://wiki.spiralknights.com/Time_Enough_at_Last/Loadout
http://wiki.spiralknights.com/Rise_or_Fall/Loadout
http://wiki.spiralknights.com/The_Sovereign_Slime/Loadout
http://wiki.spiralknights.com/Axes_of_Evil/Loadout
http://wiki.spiralknights.com/Plan_of_Attack/Loadout
http://wiki.spiralknights.com/High_Temperature_Hostages/Loadout
http://wiki.spiralknights.com/Whipping_and_Mishandling/Loadout
http://wiki.spiralknights.com/Sewer_Stash/Loadout
http://wiki.spiralknights.com/Built_to_Destroy!/Loadout
http://wiki.spiralknights.com/In_Cold_Blood/Loadout
http://wiki.spiralknights.com/Vicious_and_Viscous/Loadout
http://wiki.spiralknights.com/Beyond_the_Axes_of_Evil/Loadout
http://wiki.spiralknights.com/Spark_and_Roar/Loadout
http://wiki.spiralknights.com/The_Return_of_Ur/Loadout
http://wiki.spiralknights.com/Weight_of_Darkness/Loadout
http://wiki.spiralknights.com/The_Vile_Engine/Loadout
http://wiki.spiralknights.com/The_Great_Escape/Loadout
http://wiki.spiralknights.com/An_Occurrence_at_Owlite_Keep/Loadout
http://wiki.spiralknights.com/The_Silent_Legion/Loadout
http://wiki.spiralknights.com/Terminal_Meltdown/Loadout
http://wiki.spiralknights.com/Alone_in_the_Dark/Loadout
http://wiki.spiralknights.com/The_Gauntlet/Loadout
http://wiki.spiralknights.com/The_King_of_Ashes/Loadout
http://wiki.spiralknights.com/Breaking_in_the_Recruits/Loadout
http://wiki.spiralknights.com/Crimson_Chaos/Loadout
http://wiki.spiralknights.com/It_Came_From_Below/Loadout
http://wiki.spiralknights.com/Shadowplay/Loadout
http://wiki.spiralknights.com/Dreams_and_Nightmares/Loadout
Danger Missions:
http://wiki.spiralknights.com/Legion_of_Almire/Loadout
http://wiki.spiralknights.com/Compound_42/Loadout
http://wiki.spiralknights.com/Heart_of_Ice/Loadout
http://wiki.spiralknights.com/Ghosts_in_the_Machine/Loadout
Expansion Missions:
http://wiki.spiralknights.com/Operation_Crimson_Hammer/Loadout
Daily Prestige Missions:
http://wiki.spiralknights.com/A_Pinch_of_Salt/Loadout
http://wiki.spiralknights.com/Assault_on_Machine_Shop_13/Loadout
http://wiki.spiralknights.com/Hazardous_Heist/Loadout
http://wiki.spiralknights.com/Nature_of_the_Beast/Loadout
http://wiki.spiralknights.com/Scared_to_Death/Loadout
http://wiki.spiralknights.com/White_Collar_Captives/Loadout
Event Missions:
http://wiki.spiralknights.com/Save_Winterfest!/Loadout
http://wiki.spiralknights.com/Grinchlin_Assault!/Loadout
http://wiki.spiralknights.com/The_Dark_Harvest/Loadout
http://wiki.spiralknights.com/Total_Caketastrophe!/Loadout
http://wiki.spiralknights.com/A_Gremlin_in_Knead/Loadout
http://wiki.spiralknights.com/Bad_Luck_and_Brimstone/Loadout
http://wiki.spiralknights.com/Purr_Terror/Loadout
http://wiki.spiralknights.com/That_Mold_and_Black_Magic/Loadout
http://wiki.spiralknights.com/March_of_the_Tortodrones_(Mission)/Loadout
http://wiki.spiralknights.com/Shroud_of_the_Apocrea_(Mission)/Loadout
Those are the links I've given out. Please place your info on what gear is essential to survive in these levels. If more appear, I'll place them.
Happy contributing!
(Edit: In placing those links, I think I may have included those without links without intention. Anyone wanna fix this, please do. Oops. :|)
