stage 5 : 100 doors parallel worlds level 89 walkthrough
a button on left wall, click it to see a map :
odin rex
these are some of Norse mythology, there’s a red line from freya to odin rex
there are alphabets on top horizontally and numbers on left vertically
hint : find the 2 coordinates of each dots that connected by red line

level 89 solution :
change the alphabet letter into number to get 4 numbers
freya = A.1 = 1,1
odin rex = F.4 = 6,4

tap the keypad on door and press 1164 to open
continue to level 90