Honestly, the enemies aren’t difficult, some of them simply operate outside of the “sandbox” or what is expected from their class of enemy.
E.g.s
Knights, supposed to be elite units leading sodiers, yet they are used as…cannon fodder? (Like grunts) Further, sometimes knights with the incineration cannon either don’t charge it, or don’t even aim at you yet still hit you.
Soldiers, name is self explanatory. Only thing thatsobsurd with them is their health and insane accuracy on moving targets.
Phantoms: Enemies inside phantoms cannot be damaged like they are supposed to be (cheap). Phantom weapons cannot be destroyed (cheap).
I could go on, but you see a trend. It is “difficult” because it is cheap, showing 343 was too lazy to make it genuinely difficult like ODST firefight or Horde in gears.
Using horde as an example:
None of the enemies are bullet sponges (except for the bosses, which behave the same in the campaign, even then they are killable with “loadout” weapons, depending on difficulty)
None of the enemies are stupidly accurate
None of the enemies are spammed or used against what their design was intended for (in comparison to knights being spammed)
None of the enemies get some form of immunity (like the enemies in the phantoms, and the weapons on them)
Instead, it’s all about the tactics of the team of players, their positioning, defences, ammo usage, teamwork etc. But in WZFF? It’s simply req usage.
Once you summon REQs, WZFF becomes insanely easy, no need for teamwork. Everyone just using any heavy vehicle=win.