Some problems
Only briefly does any text imply that the pipes puzzle reveals a number. I really didn't understand until I attempted several times. Someone posted one of the main codes in their review and I noticed something pretty funny... You don't have to charge the core to finish the game if you know the pipe code. LOGICALLY, you cannot have known the pipe code unless you charged the core (unless you just shot in the dark after staring at the pipes), but still it is a bit of a plotline error.
It's kind of funny that with the core and the remote, you can finish the game without greenlighting ANY rooms at all!