Each character has multiple fatalities that can be performed at the end of the match in Mortal Kombat 9 (2011 version) for the PS3 and Xbox 360.
This is the list of fatalities, and the babality and stage fatality for Stryker.
These finisher can be unlocked and added to your moves list by performing them in either Arcade Mode or Versus Mode.
Check out these complete fatality guides for more finishing moves:
Fatalities and babalities for Mortal Kombat on Xbox 360
Fatalities and babalities for Mortal Kombat on PS3
Stryker’s Fatalities & Finishing Moves
Xbox 360
Have A Blast — Down, Forward, Down, Forward, RT while in sweeping distance
Time Served — Forward, Down, Forward, A while in sweeping distance
Babality — Down, Forward, Down, Back, Y in jumping distance
Stage Fatality — Forward, Up, Up, B at close range
PS3
Have A Blast — Down, Forward, Down, Forward, R2 while in sweeping distance
Time Served — Forward, Down, Forward, X while in sweeping distance
Babality — Down, Forward, Down, Back, Triangle in jumping distance
Stage Fatality — Forward, Up, Up, Circle at close range
