If you want all trophys for each operations like this:
- win very hard
-win any difficulty but no downs
- win vh no downs

Simple just do it 3 in same time

When I was doing this trophys with my friends we find 1 very usefull trick.

For example you got situation like this, play clear skies and ... Oh no someone get down on day 5
And what you can now do? Simple. If you hosting lobby you just close game or alt + f4.
Thanks this trick you cheat game since you can try no downs any times as you want because operations got saves.

So if any player get down host must close game, This is why better do it with friends but game community sadly is very low :c



+ 1 more extra info
Even if you get wifi disconnect you will get trophy also. When I was doing it I got internet problem at clear skies day 1 but friends waited near escape I joined and after day 6 It counted for me

It is better to atleast 2/4 players take box of chocolates support ability for warcry, since even if there is no enemy it is always better to use warcry for team hp regen.

If you want grind 4 characters to levels 40 ...
You can make trick for example you got maxed sniper/assault and on rhinegold you with maxed level class just win 3/4 misions and you leave last part of operation on new class. Yes this can be difficult for lvl 1 so it is always better to have atleast 1 friend for help :) + level difference xp