i found this on the internet but what harm in copy and pasting
Zadornov Search 1: Complete 2 Extra Ops missions following Peace Walker Battle 3.
Zadornov Search 2: Complete 3 Extra Ops missions following Zadornov Search 1.
Zadornov Search 3: Complete 5 Extra Ops missions following Zadornov Search 2.
Zadornov Search 4: Complete 4 Extra Ops missions following Zadornov Search 3.
Zadornov Search 5: Complete 3 Extra Ops missions following Zadornov Search 4.
Zadornov Search 6: Complete 2 Extra Ops missions following Zadornov Search 5.
Mission 33/Zeke Battle: Complete Zadornov Search 6. Mother Base must have been upgraded to 2 plants. When your Intel Team reaches Lv. 40, development on the second plant will begin. At that point, complete 13 Extra Ops missions other than Target Practice: No Limit or training missions to complete construction. You must have gathered all the basic parts for Metal Gear ZEKE, and must have the railgun installed. Metal Gear ZEKE cannot be assigned to an Outer Ops Team. After fulfilling the requirements above, complete 3 additional Extra Ops missions (other than Target Practice: No Limit) to trigger the call from Kaz informing you that Zadornov has escaped his cell again. Load Target Practice: No Limit (Extra Ops Mission 001) and climb the stairs to the second floor the find Zadornov. Approach him to trigger a cutscene. After the cutscene the mission begins.
that should help people like me
"United We Stand, Divided We Fall"