I like the concept a lot. Taking care of your little buddy is a nice idea to fulfill the theme. The graphics, music and sound effects were enjoyable as well.
I wish my little companion would move a little faster because I want to gather resources up front so that they feel comfy, but they are dragging behind, leaving them in the darkness. If I move slower to be close to them, it feels like I can't collect enough to provide safety. So either way, I did not get very far in the game.
Overall, great idea and concept which might get developed further. Currently, I'd suggest balancing it to make it easier, so that more people can enjoy it.