Just in a moment ago, I've beaten the game without my bot being hit. It wasn't an easy task and you can even see that in end stats. But, as you can thought, I didn't get the trophy for it...

If you came up with such a ridiculous achievements, at least be sure to check if they are working correctly, because right now they don't. I assume the rest of trophies for "Reach Reactor..." (except the one for reaching it for the first time) won't work too, so platinum is unobtainable as of right now, at least on PS5. 

I'm playing solo on PS5, I did it on Easy Mode. I've save and quit couple of times, but I doubt it voids the trophy, right? Other than that, it was straight and normal gameplay as ever. I've played as Comrade + Zed + Shroom. I didn't have any healing upgrades, I took them off so I could see if bot was damaged.