Thanks for nice comment and rate :)

main scoring
puzzle difficulty : confusing and challanging ( medium - hard level )
puzzle length : solved within 15-30 minutes (10 min to understand the map)
puzzle map : big size but nice environment xD
puzzle bug : no bug
conclusion:
+ nice environment
+ some tricky "dummy" that liven up the map xD
+ spend so much time just to understand the map xD
+ i love the hidden exit idea (u know la...) ^_^
+ it is possible to solved it in 3 minutes (lol...)

overall : 8.5/10 xD

keep it up :3