In order to complete the Dynamic Ops and Printing missions in Modern Warfare 4 DMZ, it is necessary to perform a couple of tasks at your FOB and on your deployment. It is required to pick up a Dynamic Op phone from Cheongun Village, to perform the mission, to loot a supply crate, and to craft various equipment items. It is also necessary to attach a suppressor to your weapon and to kill eight enemies in a row.
Operation Rewards Order Guide

In order to complete this goal, you must acquire the Dynamic Op phone in Cheongun Village. Before starting this task, select the option of Free Roam in the mission menu instead of choosing to start a regular Dynamic Op mission. This will allow you to go to the specified area without starting a mission.
Cheongun Village is situated in the northeastern section of the map. After spawning, go to the village and locate the Dynamic Op phone. You can collect any phone in the area, so choose whichever one is easiest to reach.
Complete a Dynamic Op
Once you have collected the phone from Cheongun Village, go ahead and initiate and complete your mission. You should select any Dynamic Op from the phone which has easy objectives, and you can finish the mission in no time. Ensure that the mission is completed once the phone has been collected from Cheongun Village to complete both objectives without an additional journey.
Loot a Dynamic Op Crate
Upon completion of Dynamic Op, there will be a helicopter that will air-drop a supply box at the location. Go to the drop location and open the box. There will be some more loot boxes in the supply box, which need to be opened.
Preparation Order Guide

To complete this task, go to the 3D Printer located at your Forward Operating Base (FOB). Click on the Plate Carrier category and choose the 2-Plate Armour Vest. To manufacture this vest, you require five pieces of Reactive Materials and 50 Synthetics. When the manufacturing process is over, your objective will be considered complete.
Print a Medium Backpack
Now, go to the Backpacks tab under the 3D Printer and select the Medium Backpack. To craft this item, you need five pieces of Rigid Synthetics and 50 Synthetics. In case you do not have sufficient resources, you can gather them on your next sortie and come back to the FOB to craft the item.
Work Quietly – Gunsmith a Suppressor Onto a Weapon
Visit the Gunsmith at your Forward Operating Base and select the firearm that you wish to upgrade. Next, access its attachments list and click on Muzzle. From here, you can select any of the suppressors that are available for your firearm. You can opt for a cheap version if you do not wish to use up all of your resources. Once the suppressor is attached, you should complete this objective.
Print a Throwing Knife
Return to the 3D Printer and open the Lethals section. Select the Throwing Knife and print it to complete the objective. Make sure you have the required crafting materials before starting the process.
Kill 8 Enemies in a Row Without Being Damaged
This goal requires you to eliminate eight enemies in succession without getting hurt at all. The simplest approach to accomplishing this task is by using a scoped gun and attacking enemies from a middle or distant range. Do not forget to hide behind objects when shooting because your enemies will find it difficult to hit you when you are far away. Do not rush towards enemy packs.
Keep in mind that taking damage from enemy attacks or environmental hazards, such as falling, can reset your progress. If that happens, you will need to start the eight-kill streak again. Stay alert, use cover, and eliminate enemies one at a time until you reach eight kills without taking damage.

