Altcoins and crypto investments are risky. The market is witnessing a downward trend from many days but you can not say that they will totally die and become zero. You can say that their value may decrease but you can't predict that they will die. I think they will perform when a stability comes in market. Good projects and better team will bring stability in some projects and these projects will then become popular. More popularity means more demand. Increase in demand will give rise to the value of tokens of those good projects.So if invest in strong coin and hold them for a good time, you may get good returns. Analysis of project involves reading whitepaper and researching about the project.