I went back and upgraded all but one item, explored each room, and mined most of the minerals and ended at 5:30. Barring a glaring omission on my part, I have no idea how the reviewer managed to play for thirteen, but it's good to know that the game can be played at different paces.
It's closer to the latter. There are areas where the player needs to make a few jumps at risk of being damaged or experiencing a setback, but the platforming is never difficult nor particularly perilous should you fail. I'm not good at platformers, so I liked that the few platforming sections were all fairly easy.
Aww okay. Thanks for the answer.