hello, this is a guide to get the trophy alone/going solo.
-create a game in any map (i recomend burning paris) with medium difficulty (the easier difficulty).
-play as any class.
-4 rounds.
-when you beat round 4 go to the shop and buy c4 and the rpg.
-when the patriarc apeears hit him 3 times with the rpg (3 clean shots to the body).
-put in his body the c4s, you need to put 5 in him so look for ammo boxes until you put 5 in his body.
-when you put the 5 c4s in his body hit him with another rpg.
-he will run away, so detonate the c4s.
-he dies, you get the trophy.
-profit?