PowerWash Simulator

This one is pretty self-explanatory, but just in case:

Begin the level by ensuring you have the yellow nozzle equipped (it was already on for me, but per wilrc6’s comment below, you may have to switch to it). Then take care not to switch and clean with a different colored nozzle (a.k.a. don’t press ‘RB’ once yellow is on). From there, clean away and the achievement is yours!

0:00 - We March for Macragge Achievement / Trophy Guide
0:43 - Degrees of Redemption Achievement / Trophy Guide
1:29 - Astra Militarum's Secret Weapon Achievement / Trophy Guide
2:22 - The Emperor Protects Achievement / Trophy Guide
3:43 - Descend into Shadow Rise into Light Achievement / Trophy Guide

This is completed during the second job of the DLC, the Redemptor Dreadnought. You need to complete the entire job with the yellow nozzle, which has a spread of only 15 degrees. Be patient and clean carefully to make sure you don't miss any spots. This will take around 20 minutes to complete while only using this nozzle.