Crap whats the movie called where he ha the big poster of the girl and every night hed dig through the wall behind it and then he climbed through the sewers. Do that. Savage
I'll go old school with tunnel out with a spoon or ask to get a sky light installed and climb through it once installed
When everyone is asleep start breaking a hole in a ground under the bed with a knife you stole from dining hall
Some arabic guy did that, and he escaped, then he met friends and they had a feast and he ate too much and died.
Tatoo a map of the prison on your back and break your brother out. cunningly plot your escape using a team of convicts who find out about your plan using your connections and brains, you can achieve anything.