Due to nightmare mode tuber being too laggy on this computer, I decided to have a go at hell. Today was my 3rd attempt, and I got the the first level with raspberries! It went something like this:
level 4:

level 5: the shield from the umbrella allowed me to kill the strawberry easily

Level 7: no lives lost despite only being here once before, and losing my last three lives trying to get through that try!

Level 8:

helped me get through with no lives lost.

level 9: I was surprised by how easy it was to get past the spikes - for the sideways ones you just just hold down left, no need to jump at all!
Level 11: much to my surprise, I only lost 1 life here, despite no items!
I lost my last 2 lives on the first raspberries level, due to them teleporting themselves through me.
I think watching videos of how it was done beforehand helped quite a bit.