it was asked before, but from my guide:

• immediately grab the bread and the metal rod by inspecting the window in the other room.
• get the gnawed bread by complaining to the guard.
• use the gnawed bread on the bricks slightly sticking out in both rooms (in the middle in the right one, and on the right in the other room) to get flint and metal box.
• use the metal rod on the jar to make the goo rod, and use it on the manhole in the other room to get a jar shard.
• use the shard to kill the poor innocent pillow and scavenge its mauled body for some straw.
• combine the straw and flint to make some ignited straw.
• use the ignited straw on the spider under the bed to obtain a shiny coin.
• combine the coin and metal box to open it and get the rusty lockpick inside it.
• use the lockpick on the door to escape.