For this build, we need rank 5 lvl 100 for full skill points.
We need these DLC's :
Sydney Character Pack
Gage Sniper Pack
Gage Russian Weapon Pack

In this build, we'll use medic bags for 16 downs and suppresion grenade for survivability.
We'll use light ballistic vest for 296 armor and 37 of speed, in practice the armor break after 2 hit.

In this build, we'll use anarchist because it's op for any difficulty.

MASTERMIND
INSPIRE : must-have for onedown.
JOKER : JOKER+CONFIDENT+PARTNERSINCRIME make 2 op ally.

ENFORCER
BULLSEYE : this skill help to gain armor.
RESILIENCE : if your not a pro one tap flashbang take it ^^

TECHNICIAN
useless

GHOST
PARKOUR : 10% of speed, a must-have =)
HIGH VALUE TARGET : help to kill buldo.

FUGITIVE
NINE LIFE : 1 down op.
SWAN SONG : with inspire help for co-op.
BERSERKER : in onedown your health is low all time so you will have a lot of damage.

PRIMARY

SECONDARY

TIP 1 : Play with walls
TIP 2 : This build use armor, do headshot for survive.
TIP 3 : Don't fight coops.

Thanks for reading this guide
If you think that a miss a information, commentary are here.

Bye ^^

PS : English is not my first language.