The locks were an attempt to show that the bosses were locked, not the levels, they're all open and available.
I've uploaded a fix now that has hopefully fixed all of these issues, huge apologies for that.
So many sequals with a lack of any gameplay development :(.
It was a genious concept, and then it was spun in to a series of games, with portal references becoming portal ripoffs and the plot-line reflecting this. The only gameplay changes I've seen to this are the locks + keys, other than that nothing.
Still, despite the absence of anything new, it's still a good concept, but that is not all the makes a game.
Reverse-psychology doesn't work on me D:
You called this the "World's Worst Game" in an attempt to get people to vote 5 (they thought in order to crush your dreams of having a low score), you *want* that 5 so I'm voting 3 D:
Auto-save will be an option in the sequal, I didn't know how to do that kind of stuff when I made this, but I also think it's a nice challenge to see how far you can get in one session ;D!