Totally Accurate Battle Simulator

My son and I made a level with all factions units on it and you just start it and all the win unit achievements will pop. Browse the battles for "Achievement Land" and you'll see it. It's called Achievement Land Units Achievement by JordanBillz930

Check it out in the video at 11:00
Achievement Walkthrough:

Once you have all the units unlocked go to the workshop. In battles search "Achievement 1 win a battle with each unit" by GeniusLi. Click the "install and subscribe" button. Then go to custom content on the main menu and play that level. Every unit from all the factions that have achievements will automatically be placed with one enemy unit. In one second it will die and all the achievements relating to placing faction units down will unlock.