I no but you kill all the people by yourself its 800 for completing the hide out plus any kills you get but for you it will take longer than a minute to complete
But I agree alone is better because you get 1100 to 1400
in 1 compared to 800 to 1100 in 50 seconds.
I just get bored alone, I been just finishing off the last few campaign
trophies now its online time. privates cool an all but its boring repeating
the same hideout alone.