This is a work in progress.
So far I only have the ones that list when they are unlocked in the description. And I'm going completely off of that. This appears to be missing the actual costume items; only hats and goggles so far. This is also missing EXCLUSIVE unlocks, like elite costumes/hats/goggles.
Help me finish/correct the list!
"Steamtop Hat" any level 2
"Beehive" Gunner and Engineer level 6.
"Straight Bob" any level 2.
"Bun" any level 2.
"Mohawk" Gunner and Engineer level 6.
"Aviator Cap" Pilot level 6.
"Topknot" Gunner and Engineer level 6 and Pilot level 12.
"Cropped Pixie" any level 2.
"Cyclops Patch" Gunner level 4.
"Aviator Cap" Pilot level 6.
"Tricorn Hat" Teaching 5.
"Widow's Peak" any level 2 and Gunner and Engineer level 6.
"Scope Lens" Gunner level 13.
"Rubber Goggles" Pilot level 4.
"Bone Mask" Pilot level 13.
"Watson Goggles" Engineer level 13.
"Mechanic's Goggles" Engineer level 4.
"Laboratory Goggles" Engineer level 13.
"Top Hat" Citizenship 10.
"Plumed Tricorn" Teaching 5.
"Rubber Goggles" Pilot level 4.
"Mechanic's Goggles" Engineer level 4.
"Glowing Ocular" Gunner level 13.
"Newsboy Cap" Tutorial 15.
"Bowler Hat" Citizenship 5.
"Bicorn Hat" Teaching 10.
