Thank you for playing the game and leaving a review ! I'm glad you enjoyed it.
You're not the first one to forget to use the journal for level two ! Another player told me they thought it was only for the tutorial, and they didn't open it for the levels one and two. I should have made it clearer that it can contain crucial infos for each level !
For the island sliding up, I took inspiration from The Wind Waker, from what I remember they used a similar system to emulate the feeling of islands appearing above the horizon.
And yeah for the audio part... I just didn't manage my time well enough. I'll make sure to be more organized for the next one !