All the good parts have already been mentioned: addictive, fun, engaging... it's a nice game to play, but
I find the constantly moving background in the menu and all the small moving parts in game hard to deal with. I do understand that some of that is due to shader issues/not enough time for fine-tuning and that you'll work those out but I want to suggest that you give players the choice between background movement during gameplay/in menu and static background. For all those players that get easily overwhelmed. You already started this with giving the choice of shake or no shake in settings. I really appreciated that.
I'm looking forward to seeing how you polish this one up.
Agree with you. I was getting bothered with the movement of the pictures on the main menu like it was blight lights from other games I played (I get bother with blight lights, crazy movement background on menus, etc.). I hope that if the game gets released, there's an option to turn it off for the people that can't deal with it and get sick from it. (For some people, it can cause medical problems, which I don't think most developers that make such effects understand that well these days.)