I found a glitch in the game I was at my grand parents and I think i was in the snow area then I left and I came home then I unpaused the game in the snow area and once I was out of the snow area I was in a orange area and it said endless check point/infinite checkpoint then it gave me the endless achievement I think this glitch might have happened before to me recently maybe somewhat of the same way maybe it has to do with switching internet connections or something but this is a glitch I found the other time it happened I wasn't in the snow area.