Advance Slowly
As there are no respawns in Firewall Zero Hour and you can easily be taken down by a few well-placed shots it is recommended that you take things slow, stick with your teammates, continuously watch each other's flanks, and assess each scenario you encounter carefully in order to avoid making mistakes that will get you killed.
Remember also that you should only sprint when absolutely necessary, you can sprint in Firewall Zero Hour by pressing L3 on your PlayStation controller but doing so unless you have the perk that nullifies it will make a lot of noise which is something you do not want to do as it will attract the enemy, and they will converge on your location.
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