Chests

Chests are a treasure box found in every possible floor, the Chests contain: Killcoins, Blueprints and Materials.

Red Chest
The Red Chest can give low tier blueprints and Killcoins as well as Equipment (Armor, Weapons) Equal to The Tier of the floor range. 1 star items (f1-10) 2 star items f11-f20) 3 star items (f21-30) 4 star items f31-40) 5+ star items f41+. Rarely these red chests will drop Items a higher tier Than the floor's Default, however this does not apply to blueprints

Silver Chest
The Silver Chests can drop, a blueprint (unknown tier), Materials and Killcoins. as well as Equipment (Armor, Weapons) Equal to The Tier of the floor range. 1 star items (f1-10) 2 star items f11-f20) 3 star items (f21-30) 4 star items f31-40) 5+ star items f41+. Rarely these red chests will drop Items a higher tier Than the floor's Default, however this does not apply to blueprints

Golden Chest
The Golden Chest is always in a trap room, most of the time they drop a R&D Material however it can also drop killcoins instead. These traps spawn dangerous enemies, Making these Trap locations very dangerous.

Blue Metal

 * Floor 3, Tamata (Always) [PROBABLY OUTDATED...]
 * Floor 3 Kami-Ikedoi (Often)
 * Floor 6 Moka-Magome (If the floor has 2 ways up, there will be no chest)
 * Floor 18 Temo-Uma (Sometimes)

Green Metal

 * Floor 11 Nokejiri (Often)
 * Floor 18 Temo-Uma (Often)
 * Floor 19 Chitose-Mei (Often) (If the floor has a way down, there will be no chest.
 * Floor 22 Kawabe (Sometimes)

Black Metal

 * Floor 22 Kawabe (Always)
 * Floor 28 Hyakkoku (Always)
 * Floor 28 Hyakuda (Always)
 * Floor 35 Wakaba (Sometimes)

Red Metal

 * Floor 32 Koshi-Yama (Always)
 * Floor 35 Wakaba (Often)
 * Floor 38 Yataka-Cho (Often)

This list is provided by DANIELZAISER91 on Reddit, the link is this: https://www.reddit.com/r/LetItDie/comments/5j5wgh/all_golden_chests_of_all_floors/ All credit goes to DANIELZAISER91 and NOT ME.