I'm giving this one a 4 because I love all the thought and effort put into this game. I think the little robot dude is adorable! Music is well chosen and delightful. I appreciate the puzzle solving nature of this metroidvania game. I would like to continue playing this out, but I am having major issues with the skewed perspective (which is very well done, BTW!) when combined with using the arrow keys to navigate. I generally love arrow key movement in games, but I am not coordinated enough to get my hands to move my little robot correctly with this 3D perspective. It feels awkward to me.
I made it to the level after the red tree, where I get a green robot to help me through the maze. I looked at your video walkthrough for this level, and my green robot seems to get stuck and not respond as the video demonstrates.
I really enjoyed the concept and sweet design, but there seems to be a few buggy instances that are frustrating. I would love to play this game with any further design revisions you make. This game is little gem and deserves more views! Please continue working on it! Cheers! ;)