When you reach Level 5 you will unlock the MX9 submachine gun, one of the most dominant weapons in the game. The MX9 is fast firing and has a moderate recoil.
Protecting Vehicles in Blackout Mode:
You can protect vehicles and choppers from incoming rockets and grenades in Blackout mode by placing a Trophy System in it. The Trophy System is unlocked at Level 45.
Unlock Zombies Mode Characters:
Complete the following tasks to unlock the corrresponding character in Zombies mode.
Collect the Racing Goggles and Scarf (random zombie drop).
Corporal 'Tank' Dempsey:
Collect the Death Machine (Mystery Box drop). Then, complete the character mission, which requires you to get zombie kills and finish the match in the top 10.
Collect the Cymbal Monkey (Mystery Box drop). Then, complete the character mission, which requires you to get zombie kills and finish the match in the top 10.
Collect the Katana (Mystery Box drop). Then, complete the character mission, which requires you to get zombie kills and finish the match in the top 10.
Purchase the Season Battle Pass.
Unlock Blackout Mode Characters:
Complete the following tasks to unlock the corresponding character in Blackout mode.
Reach Echelon Level 60 in Blackout mode.
Reach Echelon Level 80 (Prestige) in Blackout mode.
Reach Echelon Level 40 in Blackout mode.
Reach Echelon Level 20 in Blackout mode.
Reach Echelon Level 80 in Blackout mode.
Unlock Frank Woods in Blackout Mode:
To unlock Frank Woods you must first collect his 'Bandana' which is a random drop from zombies and enemy players. Then you must complete the character mission which requires you to get in a helicopter during a match and win the match with the 'Bandana' item in your inventory.
Unlock Raul Menendez in Blackout Mode:
Menendez's item is a locket which is a random drop from zombies and enemy players. Upon getting the locket you will be asked to kill one enemy with a shotgun and another enemy with a melee attack. To make getting the melee kill easier it is advised that you use the Brawler perk or the bowie knife, if available.
A good tactic to improve your aiming is to make sure you are centering as you move around the map. Centering is having good crosshair placement which is achieved by having the cross hairs ready on where you expect an enemy to be. If you do this you will find it will improve your reaction time.
Avoid Hip Fire:
You will find that bullet registration is poor when firing from the hip. It is much more beneficial when you have the time to aim down the sights of your weapon to target the enemy.
Armour Piercing Rounds:
A useful attachment you may want to consider having which is available for some weapons is Armour Piercing Rounds (AP). These shells are able to inflict increased damage to armour and Scorestreaks. With the increased health and added body armour in Black Ops 4 you will find them particularly useful.
Opening Zombie Crates in Blackout Mode:
There are multiple zombie crates that can be found in Blackout mode, when you find one it will initially be locked and there will be some zombies nearby. To unlock the crate you must kill these zombies. The weapons found inside zombie crates cannot be found anywhere else in the game, unless you kill someone who obtained them.
The increased health and body armour in Black Ops 4 has increased the Time-To-Kill (TTK) which means you need to make aiming for headshots your priority when targeting enemies.