My passage is obstructed by a boar.

Hint 1 of 5:

Yep, and it won't move by itself.

Hint 2 of 5:

You have to get rid of it.

Hint 3 of 5:

Do you remember what happened to Nico in the beginning of the game?

Hint 4 of 5:

You have that dart.

Hint 5 of 5:

If only you could find a blowpipe.