I think you need to replay 4 friend. It most certainly goes with 3 and not the others. Reason it is still in the THPS line. THUG drastically changed the game
Still doesn't play like THUG. I feel they could easily make 3 mission based, or make 4 time based. That's really the biggest difference. They could even separate it if they had to. THUG 1+2 needs its own package. 4 would feel out of place