<prompt> Human: Im speculating the costs to be above 1,000. Ruined carpet, damaged tiles.  <response>: That is sort of between you and your roommate. Dont try to involve the landlord it this unless you rented completely separately from your roommate. Talk to the roommate and negotiate this. If they wont negotiate, you may be screwed. Some wear and tear is normal for an apartment, but if this goes beyond that, someone will end up paying. 