Hi, thank you very much for greatly valuable feedback!!! (That's why the game's version is 0.3 ^^;)
I wrote about the controls on the game page, but I see that there is also a need of showing overview of the controls in the game.
True, then I'll remove obligatory keyboard keys, and change them into optional.
Yeah, hotbar is good to have to know name of things. I'll check the match between hotbar and dialogues.
Sorry, you are totally right about consistent feedback. Due to time pressure, I hadn't time to add feedback on every combination, so I'm really sorry about causing confusion and lacking direction in the game. There is no order of triggering things, as the main objective is to left-click and right-click (combine) on at least 4 different items each. The goal is that the player learns more about the situation through minimum count of clicking.
Again thanks for your valuable feedback! :)