Whispering Woods

No — when you choose the option to take a mission tile you must also place an animal on it, so you cannot take a mission tile if you have no animals available; in practice this means you can take mission tiles at most three times in the game (page 6).

At the start of your turn you may once per turn turn over a completed mission tile to renew the market (replace the six available tiles with six new woods tiles and return the discarded six to the bag); each mission tile used this way still gives its normal victory points but costs you −1 VP at final scoring (page 5).

No — you skip the market refill step on the first turn of the first player, but thereafter the market must have six tiles at the start of each turn (page 5).

No — you are not allowed to complete a mission if removing that mission tile would cause your woods to split into two or more separate sections (page 7).

If the exact combo card you earned is no longer available you must take the next lowest available combo card instead (page 8; example on page 9).

The last round triggers when a player reaches the mission-tile threshold (2 players 10, 3 players 9, 4 players 8) or when there aren’t enough tiles left to fill the market; after the final round add mission tile points and combo cards and subtract −1 per tile used to renew the market, and ties are broken by the player with fewer total tiles in their woods (if still tied the players share the win) (page 10).