solution

doorway
north
north
bridge
continue
down
east
take empty lantern
inv
west
west
passage
ladder
west
south
north
take can
inv
west
ladder

use can
use lantern

darkness
continue
west
west
west
west
north

take red coin
north

west
take blue coin
up
take shiny coin
down
east

east
take concave coin
down
take corroded coin
up
west

use blue coin
use red coin
use shiny coin
use concave coin
use corroded coin

north
take teleporter
use teleporter

take business card
take strange book