Taking the City!
Upon arriving at Innsbruck, Berengar and his army immediately created a proper siege camp, which was well defended and placed out of range of the enemy's weapons. However, unlike the sieges Berengar had led before, this bombardment was brief, and not concentrated on the weak points in the City's defense. This act was to maintain the integrity of the walls as there was a far more sinister plot afoot, one which would allow him to take the city without the need to bring down the walls.
Berengar's riflemen continued to take shots at the enemy defenders until the sun went down. The enemy defenders were not accustomed to such weapons and figured this was the ordinary tactics employed; as such, they were unaware of Berengar's true intentions.