Most one hits are caused by standard borg plasma torps. They are handled very oddly in the game, they crit VERY often (nearly 25% according to my logs) and can one hit fulled buffed shields like they are nothing, meaning if you don't have lots of hull with a good deal of resistance you won't be around long. Shield resistances seem to not really work against them, or at least their damage value doesn't get diminished much, but then again maybe it is and the damage value makes tricobalt crits look hiliariously weak.
I've never seen a cube or tac cube crit, but gates, unimatrix and the queen do very often.
The only other thing that tends to one hit, or get very close is isocharge. It is avoidable to an extent, unless someone is pulling agro in the 90? arc, but it is energy based and an RSP can absorb it. The problem is that the damage can be so severe that the bleed through alone with RSP can nearly kill you. The other problem is iso often comes in multiple hits, the same charge can hit you a couple times, and multiple ships will throw them out at the same time. So if you get hit on the weaker 1st or 2nd jump, you just can't recover shield facings fast enough to do any good against the 2nd hit or a different iso charge already on its way.
So it's a torpedo that is invisible, not an invisible torpedo. Gotcha.
It's actually not a semantic difference. Not so long ago the high yield targetable torps had a serious issue where oftentimes they wouldn't draw, and players actually would be one-shotted by invisible torpedoes doing an even more insane amount of damage than what we're seeing right now.
Momaw's list is quite good, but it's missing one piece of information. Quite often there is a massive desynch between when Borg STF enemies deal torpedo damage, and when said torpedo decides to show it's vfx, resulting in people being killed as much as fifteen or more seconds *before* a torpedo appears and hits a ship.
Yup, I concur this rather silly thing. Unless, there is an unknown type of powerful weapon yet to be discovered by both the Federation and Klingon factions?
The Borg possess the technology (in STO) to produce torpedoes which are not only perfectly undetectable, but which can utterly destroy any Federation vessel in a single shot. We know this technology exists because we've all been victims of it. I have no problem with existence of this technology in the game. What I do have a problem with is that Starfleet hasn't gotten their hands on it by now. If a technology exists then it can and will eventually be known by the enemies of those who possess it. There's no question about that. I think it's high time that either Starfleet also has the technology or it be removed from the game entirely.