You can unlock the Hammer tool for demolition after finishing room 107 [11].
If you are getting a "Checksum error" specifically on part4, it means that part was corrupted during the download. You don't need to redownload the whole game—just delete and redownload that specific part4 file. Hotel_Renovator-FLT.part4.rar
This faster demolition tool becomes available after the "Old Friends" event [13]. You can unlock the Hammer tool for demolition
Hotel Renovator is a simulation game where you restore and manage a run-down hotel. Hotel_Renovator-FLT.part4.rar