No, you started by saying "just reverski". Then you changed your story to "just go in and kill heart, no skill required". You now seem to want to add that damage avoidance skills are necessary. Please stop moving the goal posts.
I'm not moving the goalposts. I mentioned reverski because that's literally what you are doing like 90% of the time to stay out of the Thargoid's way, while you are waiting for its shields to decay. (Unless you want to work down its shield yourself, which is a waste of heatsinks IMO).
And yes, ofc you need to be able to hit the Thargoid with rails, sorry if that's seriously called a skill (considering that the target is the size of, idk, a very large building or something).
But I thought that was given in the case of the OP who, according to himself, was totally capable of killing a Cyclops.
The Basilisk is only a couple more shots, yes it's stronger and sturdier, but not by a long shot.