Constructions located in mountainous areas are highly prone to rockfall impact risks. ln order to ensure people's safety, a robust design is necessary, then the understanding of concrete wall damages and failures caused by dynamic phenomena are highly needed. However, the scientific literature barely studied the behavior of concrete slabs, whereas beams under impact have been hugely investigated. This study focuses on walls, at the scale representative of common construction. The purpose is to provide a better understanding of the phenomena induced by rock-falls impacts. lndeed, slabs or walls subjected to outside plan loading are characterized by four types of failures: bending, shear, combination of both and punching. For a constant impacting energy, the failing mode can radical/y change; this is why the study dissociates the mass of the impactor from its velocity. Various configurations of rock-fall were experimentally processed; most of them either characterized low velocity and strong mass impactor or high velocity and low mass impactor. The different impact energies were set before the experiments. For each iso-energy cuNe, the state of the wall, its damage, and ils residual potential (characterized by a second impact) had been identified. The parametric study has enabled to define three criteria: a failure one, another describing a non-penalizing damage limit (which does not require repairs) and the last one representing a significant damage limit, involving necessary and possible repairs.