Your account level must be at level 5 to play against other humans which is required for most achievements.How do I unlock Last One Standing?
Just to clear any confusion about the achievement, "Be the only player alive" means everyone, both your allies and your enemies, must be dead at one time while you are alive. In turn, this implies that you got the last kill or the enemy killed themselves.Siege
This is a very luck dependent achievement as it's not easy for multiple people from both teams to die simultaneously and, while a 12 second respawn time makes this more plausible, this achievement will still be hard to unlock in Siege and Payload. Even with 45+ hours on this game, I have yet to see this happen in a real game.
Having a Skye on each team seems like the best way to earn this achievement as her ultimate is able to deal immense amounts of damage while surprising the enemy team.Boost Method (Requires 10 People):
Should work similar to Siege. Very luck dependent.
Boosting method should work similar to Siege. Would like confirmation on this.Removed Game Mode SolutionsAs a few comments have pointed out, Survival has been removed. It feels strange that the developers would just remove a game mode (then again it is beta), so I'm keeping the solution in a separate spoilers tab just in case.