StarBlood Arena

This requires 7 consecutive kills within 5 seconds.

All the previous trophies will come naturally except for these last 3. You can boost this easily or do it on your own in a skirmish match. Set the map to Catacombs and put a 10 or 15 minute timer. Put 7 bots on Easy, not Target (they will run and hide the whole time making it harder). Play with Elsa or The Baron as they have good weapons. The method others and myself used was to play as Elsa, spam mines (with the mod that moves quicker to opponents) and shoot everyone until the medals pop up. Elsa's special is great for when the bots get all clustered together as you can shoot and get multiple kills instantly. This will take some practice but can be achieved. Boosting would make this incredibly easy to get.