Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock
Mutations (0 GP)	(The forgotten land) Stop 20 Sven Enemies from trasforming.
Reflections (0 GP)	(The forgotten land) Deflect 50 bullets using the vehicle shield.
Vendetta (0 GP)	(The forgotten land) Complete the game defeating Dr.Vendetta.