You cannot go on like this. You must do something to discourage the Wargs from pursuing you further.

When Revealed: Flip the Time objective to Nightfall. Add Pack Leader to the staging area. Shuffle the encounter discard pile into the encounter deck. Discard cards from the top of the encounter deck until X Warg enemies are discarded. X is 1 less than the number of players in the game. Add each discarded enemy to the staging area.

If you can defeat the alpha mail, that will scatter the pack...

Pack Leader cannot take damage unless there are at least 5 progress tokens on this stage.

Forced: When it becomes Day, discard all progress from this stage.

The players cannot defeat this stage while Pack Leader is in play. If Pack Leader is destroyed, the players win the game.