3 0 2The first wave you come across the Oni is wave 10 and are the red demon creatures. Killing 50 of them isn't that hard and you should earn this achievement through natural progression.Showing both comments. Leave a comment. With all kill x achs do ally kills count or just yours?Posted by ScoobyWRX555 on 03 Apr 13 at 18:50 Ally kills definitely count; I got this on a bonus round.Posted by Dr Sandypants on 28 Aug 13 at 11:07 Leave a comment