I like the concept that you have, but it sounds like it is impossible for some of the players trying to complete one of the newest achievement. Since you did not have the name of the new achievement, I have one suggestion that I have from me. I will name “Greatest Survivor” because it means that they survive throughout the game without deaths. Although, the name of the achievement looks alright to me. Overall, I don’t think it is possible to implement one new achievement, but that is still a great concept that you have. Keep up the great work!