Here’s a quick video I threw together showing how I got the two Practice Room damage achievements (Anything() and Everything()) during my first playthrough – no crazy memory requirements or duplicate functions needed!

The basic strategy is to debuff with Void() modified with Crash() (for a stronger debuff) and Breach() (for a wider area of effect) and then drop a big backstabbing Cull() modified with Load() (so you hit as many as possible). First position all the enemies together by killing them until they all respawn in a group and then use your Turn() to do the deed. Easy, and no special duplicates required. Enjoy!

Link to the video