Still curious with 100 rooms, this is the walkthrough for level 49? You can get the solution after see this picture and read the guide.
100 rooms walkthrough level 49
Guide: pick up torch then light it using torch on the wall, pick up book and fire it using torch you will get knife, fire curtain using torch go to 2 lion head statue, burn knife using torch then use it open plate below lion head, burn metal plate then bend using thongs and cut using knife, put 1 plate below the bookcase and put other metal plate below pharaoh statue. go to door put fuel drums below right torch see picture 13 now light railing below using torch.
