the idea of those maps:
its like a story mode and portal map all in 1
theres u, doing some portal gun "testing" and this entity tries 2 "kill" u with portal gun tests :p lol and it takes quite a while to finish about an hour if ur moderate
these maps best work on construction as if u die, u can make a tele exit
on request ill put up a link but its not made by me o.O (i dont remember who made it either it may have been by those TA guys but idk
also if u have 1 of the maps plz post o.O!!