King was particularly demoralizing among the defenders, and the evacuation of women and children accelerated. Storming the city The Mamluk army assembled before dawn on 18 May and attacked the entire length of the wall to the sound of trumpets and drums carried on 300 camels. The Mamluks poured through the breaches; by 9a.m. the outcome seems to have been beyond doubt. The Mamluks captured the Accursed Tower on the inner wall and forced the Crusaders to retreat to the Gate of St. Anthony. Guillaume de Beaujeu was mortally wounded defending the Gate of St. Anthony. On the Montmusard walls, the Lazarists remained while the Templars and Hospitallers made a failed attempt to retake the Accursed Tower. The redeployment allowed the Hamans to break through the Montmusard walls and kill the Lazarists. The Mamluks gained more penetrations as the Crusaders abandoned the walls. The Mamluks pushed into the city, looting and massacring any they encountered Organized Crusader resistance collapsed, and the retreat to the harbour and the ships was chaotic; wealthy refugees offered exorbitant sums for safe passage. Henry II and Jean de Villiers, Grand Master of the Knights Hospitaller, were among those evacuated. The evacuation was made more difficult by the poor weather. Acre falls By the night of 18 May, Acre was in Mamluk hands, except for the seaside Templar fortress at the western tip of city. The fortress contained four towers, and within were remnants of the Templar, Hospitallers, and Teutonic Knights, and thousands of civilians. The fortress held out for ten more days, during which Matthew of Clermont, a Hospitaller marshal, was killed. On 20 May, the tower held by the Templar, led by Peter de Severy, asked for amnesty. Sultan Khalil agreed to allow the Templars to leave without weapons to Cyprus. The agreement collapsed when the Mamluks supervising the evacuation inside the fortress were killed by the Templars. Templar Thibaud Gaudin and a few others left the fortress under the cover of darkness, taking the Templar treasury with them to Sidon. According to a contemporary Mamluk account, Khalil sent Emir Kitbugha al-Mansuri to offer amnesty to the Crusaders. The Teutonic Knights accepted and surrendered their tower after being allowed to leave with their women, but al-Mansuri was killed by other Crusaders. On 21 May, de Severy and a small delegation left the fortress to resume negotiations and were executed, possibly in reprisal for the