Totally agree with this.
We really need a tracker for the CM's you did this week.
Maybe Bring back Top-Tiered Terror Toppler where we were previously able to track what CM we killed.
Change the requirements of the achievement a bit, maybe if you complete all the CM's for the week that it gives you a small reward and resets every week. Mainly to be used as a tracker or add it in the Achievement 'home' menu.