Survival Mode

The Survival Mode (sometimes called Secret Survival Mode) is a secret mini-game introduced in Mortal Kombat: Shaolin Monks is where players defend themselves against waves of enemies

This fighting mode can only be found in the Foundry stage using a diamond-edged axe (which is used break enchanted crystals to open the gate to Shao Kahn's Arena) to smash it onto the left side of the upper floor of an area in the Foundry close to the entrance/exit portal.

Level 1

 * Baraka
 * Masked Guards
 * Tarkata

Referrences
http://www.kamidogu.com/