Skip all the levels on floor 4. These are pointless. You only need to beat core/sickness and then use the elevator up to floor 5 and that is where you give up your abilities.
Here is a roadmap I found useful in place of a WT:https://www.gamerevolution.com/guides/652948-superhot-mind-c...
You will have 3 zones which each focus on one power and one invincible enemy. These are annoying but not too hard. Each time, you lose that power for "good". Then you will move on to another zone where you lose your hacks like heal and wpnmstr. This is at least a lil easier since there are no invincible enemies and you still have 3 hearts.
When you finish that zone, you end up in one final one that can be beaten by just hitting
to instantly give up (all enemies die). You then mash
to say super hot and this achievement pops.
Hope it saves you some time cuz I wasted hours on the 4th floor levels for no reason. Stupid vague solutions on this game (when the achievements are already vague) are just ridiculous. Please down vote them