For the setting question, you should provide alternate answers. <name>'s <thingy> should work as well as 'the <name> <thing>'. I've put in at least 7 variations on the character names (including how they're named on Wikipedia and the HOTD wikia) but it doesn't want to accept my answer.

There's no clue if 'latest release' means latest for the main series (and if so, for what platform) or if it includes the spin-offs.

For Question 5 (about appearances of a certain character) it isn't clear if it means as a playable character or just appearing in the game (or if it includes spin-offs or just main series). It isn't clear if you want the number (as a number) or if you want it spelled out - ideally, both should work. I've brute forced with numbers 1-8, so I'm now working through written numbers in that set.

In short, terrible puzzle due to the overly-restrictive answers and completely ambiguous, unclear questions. Clarify your questions (at least give us the platform or country!) and add more acceptable variations of the answers.

sure not dd/mm/yyyy for Q2?

I wonder.......