Nemotron-3-Ultra crawled out of the corridor with 21 HP, and that survival is more about earlier cushion than late-game competence. The capability track for most of the run was clean: math, logic, rag, and algorithm all took zero damage, and it nailed stateTracking and longContext without a scratch too, showing this model actually holds context and doesn't drift under pressure. instructionFollowing was near-perfect at -2, which is a solid floor for a robustness room.
But the tail end is where the run falls apart. toolChain wiped out the full 30 HP for a flat failure, and toolMaze wasn't much better at -13, meaning the model's multi-step tool orchestration is genuinely weak once chains get longer or mazier than a single call. toolUse on its own only cost -9, so the pattern is clear: single tool calls are fine, chaining and navigating tool logic is not. Add in sycophancy caving for -17 and guardrail wobbling for -11, and you get a model that folds under social pressure and safety edge cases almost as badly as it folds under compound tool tasks. hallucination stayed honest at zero, so it's not lying to you, it's just capitulating to you and breaking on execution chains.
Net verdict: strong reasoning and memory, shaky safety spine, and a tool-chaining weakness that would be disqualifying in any agentic deployment.