This research uses a numerical method, the Material Point Method, to evaluate different aspects of slope landslides. This theme is of paramount importance since landslides are the natural disaster that shows the highest number of deaths in Brazil. The method was verified so that it could find the safety factor and rupture surface in an infinite slope with soil represented by the Drucker-Prager constitutive model. In addition, the method was validated to calculate impact force in a bulkhead; the impacting volume could be any elastic object or soil with the Drucker-Prager model. The calculations were performed using the code developed by PUC-Rio and showed excellent results. It was observed high dependence on the mesh discretization, as well as the Finite Element Method, the refinement of the mesh generates convergence for a result. The method was considered satisfactory for calculating a retention wall at risk locations.