Well this game did set a mysterious, yet disturbing atmosphere. It seems that the you did a lot of wrong things (murder etc), and you're trying to correct your past mistakes using a time machine.
"Hmmm there's something shiny in the hole, I need to fill it up with water." *Fills hole with water from pot* "Hmmm I wonder if there is a way to release this water?"
WTF DO YOU WANT FROM ME?
There's a major bug in this game. You can only combine the bottle with the flies once. Only do it in presence of the frog, and then click on the frog before the combining animation ends. If not, you will have to refresh the game.
For the first camera level, play with the camera settings until you obtain all the hidden numbers (3 sets). Arrange the numbers in the order you got them, left to right from the camera. These numbers are a simple cipher text that can be solved by converting it to its corresponding letters. A is 1, B is 2, and so on. Hope this helps for those who are stuck.
==Spoiler Alert==
To view the 1st ending, chase after the traveller. To view the 2nd ending, refresh the page after reaching the credits page of the 1st ending, and press continue. This time round, do not chase the traveller.