Overall the hack is fine and theres not much to complain about it.
If you intend to update it in the future, theres a few things that could be improved:
Title Screen: Missing rightmost tile column. https://imgur.com/NVliXXy
Level 1 (River of Tears): Wrong gfx on the top water tile. https://imgur.com/l6cOn3Y
Level 3 (G-G-G-Ghosts): Minor sprite memory problems (some tiles of the sprites get invisible sometimes) https://imgur.com/dADZT8O. You can try playing with the sprite memory settings or applying the "No More Sprite Tile Limits" patch to see if it fix it.
Level 4 (Super Cool!): This levels has some weird forced scrolling. I would suggest to avoid forcing the player to scroll the screen. Its not a really big deal tho.
Overworld: Minor perspective problem (the height of the top-right portion of the land, when it meets the water, doesnt match). The order of some events looks wrong. https://imgur.com/81fnqiUhttps://imgur.com/DnBcP22
Hack muito agradável... Dificuldade justa e desafiadora no final... Parabéns pelo ótimo trabalho... Essa hack poderia ser um poucoais longa, apenas... Se puder atualizar com mais umas 6 fases ( 1 delas com (Rolagem Acelerada) seria ótimo