I just tried your game, and nice work!
I feel the difficulty was not too bad, and was correct in my personal opinion after completing the game (though I did think differently when playing until I made a discovery towards the end which I will not spoil for other players)
I feel the game was short and to the point and got its message across. I am not really a good writer so I cannot give too much feedback on the story sadly. Maybe add a few extra comments for the other characters as I think they started to repeat. Also maybe have a small backstory to what is going on with the race since I was confused about what was happening at first other than I am following the other red peps.