The Courier must:
- Complete the X-8 Basic Testing Program in the X-8 research center.
- Complete the X-8 Advanced Testing Program.
- Complete the X-8 Testing Program...with Nightstalkers!
- Completing the Basic Testing Program challenge will unlock the Advanced Testing Program challenge, which in its turn will unlock the Testing Program...with Nightstalkers! challenge.
- The Nightstalker Testing Program must be unlocked by gaining access to the kennel in the X-13 research facility beforehand.
Behind the scenes
Dog Run II: Who let the... is a reference to Baha Men's song "Who Let the Dogs Out".
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