Interesting idea. I thought of Null Hypothesis when playing, so it makes sense that it was an inspiration!
The action game structure is interesting. I like the idea of being able to get "good" at a "puzzle" game. Thinking on the fly about which angles and paths are the quickest/best to make the combinations I want, adds that layer on top.
In its current form though, I'm not a big fan of the action. I get frustrated when I get stunned multiple times in a row, when the two objects I want to combine fly far away from each other, when things just don't seem to line up, when I combine the wrong things, etc. But I can see what you were going for, maybe an easier difficulty is what I would want.