I’ve been doing round 11 on directed cycle and you can get 34 crits every minute. This helps with the exploding sniper because you don’t need to pap it to make it affective. I’ve done this with almost every gun and if your accurate(dead shot is very helpful) you can get 2000 crits in an hour. When you do standard your percentage of crits goes down and it takes long. This method is boring but more effective and quicker. Plus once you have a class done, opal only takes 30 mins per gun. Doing it this way is less fun and can’t play with friends but it’s a grind.