Absolute cinema!
This is awesome. I loved the dialogue between the kalimba and the guitar at the beginning, and the way they echo each other's rhythm is a great idea.
I also loved the B section, which creates a perfect bridge between the opening and the return of the A section. That part was incredible, and I felt that every instrument had something interesting to contribute. The piece conveys a lot of emotion throughout.
The only thing I could point out is that I found the kalimba a little too percussive at times. I'm not entirely sure whether it's due to the register, the sound choice, or something else, but perhaps pitching it slightly higher, adjusting the EQ, or even experimenting with a music box sound could be worth trying.
That said, I genuinely want to see a game's end credits paired with this music.
Good luck with the rest of the voting period!
(I'm still humming your kalimba melody...)