盲猜一个　

如果走民事诉讼的话，可以用违反合同去法院起诉　

或者直接刑事诉讼，参考维基百科 Vandalism Act：The Vandalism Act 1966 is a statute of the Parliament of Singapore that criminalizes a number of different acts done in relation to public and private property, namely, stealing, destroying or damaging public property; and, without the property owner's written consent, writing, drawing, painting, marking or inscribing on property; affixing posters, placards, etc., to the property; and suspending or displaying on or from the property any flag, banner, etc.

参考倒霉屋主的另一篇帖子，5楼　留学生恶意退租-狮城留学-新加坡狮城论坛 (sgcn.com)

这哥们真是不知道天高地厚，在房间里画小胡子追随者的标志

希望倒霉屋主保留好证据