Onslaught is definitely an "elite" level STF. It puts Cure Space Elite to shame. It's also obvious that this one is not a DPS-run, like the rest. Onslaught requires strategy, which is the whole point of STFing. The team that I went into Onslaught with for the first time did awful because we had no idea what to expect and Onslaught was completely different from the existing STFs.

I look forward to seeing how a prepared team handles it