Glad you liked it and almost got to the end. The thing that triggered you progressing to act II was buying one of the skills (with a bit delay). And I think, as with any clicker, it is a valid strategy to just buy buy stuff as they become available.
The boredom doesn’t have a special event, it scales the amount of xp each click gives. So if you got 2xp per click at 0% boredom, then you get 1xp per click at 50% and always 0xp per click at 100% boredom.
I think the problem with the voice-lines is that you’re thrown into the game and need to know everything at once from start. And we are planning on restructuring that a bit, which should ease up on the pace of them.