一下子全都挤了进去的成语

He has been searching for more than ten years, trying to find traces of that man. There are at least a dozen groups of people shouldering the same mission. Every time, someone said that they had discovered the target, but in the end, these people either died easily, or did nothing, or they made some achievements, but they were far from reaching the level that the barbarians were afraid of in the legend....