30 0 2Best place for this is in story mode in the first level. Wave #5 you have to destroy 15 of them. I would suggest killing 10 and then dying to keep replaying this level to make it less painful.Showing both comments. Leave a comment. It's wave 5 actually, but thanks for the tip!Posted by SiegfriedX On 17 Jul 15 at 04:17 Thanks. lol i knew it was one or the other.Posted by capicawl On 17 Jul 15 at 18:14 Leave a comment