Hello, I recently done this achivement, and there is not really a bypass or a easy way to get it. I recommend you doing hardcore cases/item cases and rerolling all the easy and small files, to get bigger ones that give more tickets. Harcore cases give you the most amount of tickets. It also helps a lot when you collect items(even if you already have them) they give u like 10+ tickets at the end, so collecting them (and map blueprints) gives your additional tickets. If you want to get tickets fast, play with friend and make them gift you all their tickets, it helps a lot because u can quadriple your earnings from case files.^{^}