While Michael, Mahone, Whistler, and McGrady made a clean break, the other participants were not so lucky. T-Bag and Bellick are returned to the general population of Sona, while Lechero is severely wounded during the attempt and later killed by T-Bag. "Prison Break" Hell or High Water (TV Episode 2008) - Plot
The escape plan involves digging a tunnel to freedom, which is a clever and meticulous plan typical of Michael's character. The group faces numerous challenges, including the corrupt and ruthless prison authorities, but ultimately, they manage to break free.
However, to provide a more detailed guide:
Unlike the meticulously planned breakout from Fox River in Season 1, the Sona escape is a high-stakes, improvised operation driven by desperation and a ticking clock. The Escape Strategy: "The Sacrifice Play"