I have been playing this mod for the past 5 hours, at the moment I am a little loss on where to go, I have spirit form and just beat the toad on the moving idol inside the forest, still trying to get my bearings on what to do next.
The mod itself is quite creative, a small extra adventure using old elements, yet still is good and enjoyable keeping the "Aquaria" spirit.
I have not seen any bad things on it but I did notice a quirk or 2 that made me smile and realize that the creator or creators of the mod have been more affected by the internet and IRC era

Example of this is the use of bracketed emotions [blushes], [smiles].
I do not mean to say it is bad, just... strange.
By no means I disapprove of their use, though in classical role-play adventures the use of proper 3rd person writing has always been the most used tool.
A simple example of this, at Elena's home where young Naija is when asked about the treasures and praised she answers:
[Blushes] Thank you Elena.Were a more classical example of the same line could be:
After hearing Elena's words of praise a warm blush appears on Naija's cheeks, her eyes drop a little when she speaks with a soft whisper "Thank you Elena." Kudos for the great work put in this mod, keep it up