take action to escape level 51 : first you need to collect frame of eyeglass, and the 2 of lens (combine it) then press the eyeglass, you see the color stains on left side of the door, set the stains on the right side, same color with the left one.
take action to escape level 52 : you just need to set number 1 to 10 base on the pointing wooden object, for number 1 is poiting to right side, find wooden objects appointed by the number 1 wooden objects(then give that wooden object with number 2). for detail answer check picture below
take action to escape level 53 : another pairing object with the nation flag
kangaroo with australia flag
pizza with Italy flag
uncle sam with USA flag
bob marley with Jamaica flag
bus with England flag
sushi with Japan flag
eifel tower with France flag
firaun with Egypt flag
matryoshka doll with Russia flag
then take the key
take action to escape level 54 : collect wood stick on the top middle of the rack, head of shovel on left corner of the floor, combine it (became a shovel). use shovel to dig on the “x” mark, to find the key (dig on the third “x” mark from right).
take action to escape level 55 : you need to arrange the bond that connected the alphabet
D to E : set 4 hand bond
E to B : set 1 hand bond
B to E : set 1 hand bond
E to A : set 1 hand bond
E to C : set 3 hand bond
then take the on the top of watch.