I think you can add a button submit, so the player can submit his answer and not waiting for the timer.
I also think it will be good that the player knows exactly at which arrow he failed. You can color the arrow to green for example but there is red arrow so maybe just color the border OR display the actual arrow?
It's so much better! I love the pink one that splits into two :33. You also descrease HP and add more enemies, I feel like the game has more action, I like it! I suggested the decrease duration idea because I feel like it makes the game closer to the theme. I am happy that you like the idea and try to implement it anyway ;)
The idea of switching betwing mouse and keyboard is actually fun! And I think that the idea of the cutscene is good, because you should click on mouse to view the conversation. So, the player can understand your concept.
However, I think that the game is a little repetitive. Maybe introduce new enemies lately. Also, the switch happened every 60 secondes. I think it's better that the duration decreased with levels.
