So Much Blood! Achievement
So Much Blood!25
Gunzerk continuously for 90 seconds.You only need to get Level 2 to unlock your gunzerking action skill, but you will need to get Level 10 to unlock the Last Longer and Yippie Ki Yay skills to get to 90 seconds. Wait until you are fighting a large number of enemies before popping the action skill, and kill everything in sight to continue adding time to the skill. With the two skills mentioned prior unlocked, you will be able to get to 90 seconds. If you're still having trouble, level up some more and put more skill points into those skills.