Murder, rape, plunder and destruction are all perfectly fine with Allah - if done in the name of Islam
Muhammad justified his crimes with divine revelation:
The details of all his criminal onslaughts in the form of battles and assassinations are chronicled in this article in a chronological manner. One should note that every time the 'Apostle of Peace' committed one of his criminal onslaughts, he always justified the crimes by quickly claiming a 'divine revelation' which conveniently removed the blame from his bloodied hands.
Muhammad was married to a 6 year old Jewish girl, while he was 51, and he had 11 wives
Islamic fundamentalism promotes jihad (holy war), against those of other religious and political views.
In addition to good works, salvation is sought though observance of the Five Pillars: reciting “there is no God but Allah and Muhammad is His Messenger,” praying five times per day, fasting, giving alms (donations to the poor), and a pilgrimage to Mecca.
The Koran says, "Fight in the cause of Allah" (Qu'ran 2.244); The Bible says, "we wrestle not against flesh and blood" and "the weapons of our warfare are not carnal" (Ephesians 6:12; 2 Corinthians 10:4).