I feel like this type of game is just not for me. People have already commented on the difficulty but just that gameplay in general doesn't feel satisfying or fun to me.
I think on the topic of difficulty, if you keep the same difficulty, then I would suggest rewarding the player earlier on with story since that seems to be a part of the game you would like to focus on. It feels discouraging especially to play knowing after the first level you likely have to wait to beat level 5 to get anything storywise.
The other end, if you decide to make it easier, I would suggest making the obstacles come in more gradually. I feel like walls and acid spit is enough without the spider webs or any other combination of just two. Putting all 3 on the first level is a bit crazy. Also the wall is pretty fast.
Everything else about the game is very good.