Peak. Sokoban. Inject. Into. Veins.
I genuinely had a lot of fun with this. I love how many moments I was like "oh my god this is a crazy mechanic" and then you just went all in. Especially how the mechanic of pushing numbered boxes felt like it was disregarded for just enough levels that when you remember it exists again it feels like you're having a pure neuron activation moment. I also love there were a few puzzles where I thought I'd outsmarted the trap I thought was coming my way and then fell into a completely different trap without it feeling frustrating. Like I was laughing at myself for my own hubris.
I will say though the sound design needs to be tinkered with a bit because it is a bit loud, especially with no BGM to judge it I was somewhat jumpscared by how loud the movement noises were and the box pushing the first time I did both of those. If you eventually get around to adding BGM that might help set a baseline level to expect for sounds, but for now I'd turn them down a bit.