Update #2
Time for the second update! The game is still playable here.
Since the last update, I mostly worked on the player’s sprite and the background tiles. I got both the sprite and one environment done; I had a target of three, but I doubt I will even be able to complete the second one.

Some boxes, a shelf filled with books, and some tower of books which will act as ladder.
On the other hand, I am satisfied with the dialog box, which slides in and out nicely. The only problem is that using bitmap font with Phaser means I will have to wrap the text with some well-placed ‘\n’ -_-‘
Next: some more work on the player sprite, one or two enemy, and some audio! Maybe an actual level also, now that I think of it…