This an attempt to develop good tactics against continuous waves of bugs and most usefull against cyborgs this tactic will be more difficult against the illuminate i assume. Dont use against bosses. And if using this strategy read the entirety to understand how to use it
Gunslinger is good to use against the hulk and or when in a downed state mowing down 6 enemies is usefull when help is limited or non-existent. Some ought to be careful when there are inbound drops. Remember is not the user of the beacons fault its mostly the one running around. The justice rifle is effective in its ability to penetrate. Remember turrets need to be placed good strategically on the map think about it before grounding it. and running is also an option that you need to use often so you dont have to bang your head against a wall that closes in.

Player 1: Courier
Designated carrier of the black box and should be the first to pick up shell rounds. Also the sniffer
Perk: Gunslinger or sacrifice it if encountering snow or swamp planets.
Primary weapon: justice rifle fully upgraded
Secondary: mg-94 mk3
Stratagems:
1: mg-94 machine gun mk 3
2: resupply mk3
3: sh-20 shield generator pack mk3
4: m5 APC mk3 for instant transport when saving exo suit drops and fast travel at start or an exo suit 48

Player 2: Tank
The one to hold and control the line of inbound waves. Also be carefull wit the illuminates force wall created by the obelisk.
Perk: gunslinger or sacrifice it with all terrain boots
Primary weapon: justice rifle upgraded fully
Stratagems:
1: exo 48 mk 3
2: exo 48 mk 3
3: exo 48 mk 3
4: exo 48 mk 3 or a well placed S/MG-II minigun turret mk 3.. 3 uses

The last ones going to be a two man army weilding a recoilles rifle each and a supply pack

Player 3: Recoilles Two Man Team nr .1
The one who fights against the armored units and helps nr 4 reload his recoilles rifle
Perk: gunslinger or when swamp or snow use all terrain boots
Primary gun: justice rifle fully upgraded
Secondary: recoilless rifle with
supply pack mk 3
Stratagems:
1:Resupply mk 3
2:recoilless rifle mk 3 and supply pack mk 3
3: AT-47 Anti-Tank emplacement mk 3.. 3 uses
4:A/MG-II minigun turret mk3.. 3 uses

Player 4: Recoilles Two Man Team nr .2
The one who fights against the armored units and helps nr 3 reload his recoilles rifle
Perk: gunslinger or when swamp or snow use all terrain boots
Primary gun: justice rifle fully upgraded
Secondary: recoilless rifle and
supply pack mk 3
Stratagems:
1: Resupply mk 3
2: recoilless rifle and supply pack mk 3
3: AT-47 Anti-tank emplacement mk 3.. 3 uses
4: A/MG-II minigun turret mk 3.. 3 uses

There probably is better strategies...