I wish I could understand Portuguese, because I think I would understand the story more, but I do like the deep voice! The obstacles are somewhat easy to avoid. I think the most annoying part is if you fall you start from the beginning! I can imagine that would be frustrating for some players, at least it was for me. You may want to have obvious checkpoints, maybe a purple pulsating orb cloud? Grabbing the health is a bit tricky with getting the right angle, so it might be easy to just have it hovering and spinning and have the player run into that instead.
I wish there was more sound effects: louder non-annoying walking sounds, jumping sounds, slamming sound when I hit the ground from a long distance, maybe a heavy droning sound with a 3D Doppler effect when the red cubes get closer and farther from you (and maybe having red light emitting like that too), hit sound effects, sound getting more hearts, sound that I was being lifted to the next area and I think most importantly a very ominous unsettling background music. I think sound is a mayor part in this game and I think it has a lot of potential!
I think it would increase pressure and the fun (and anxiety) if you had a long timer bar at the top of the screen with a heavy thumbing sound when you get close to running out of time. This gives the sense to the player to not takes thinking so cautiously, and to aim into the unknown frantically trying to find the exit. Maybe have multiple paths that loop(?) to increase that pressure.
A part from not knowing the story, I liked it. Lots of potential. Keep doing awesome work! I can imagine making all those platforms and play testing through it all was not easy!