| Endurance | 10/10 | Thirteen rounds of strict pull-ups, box step-ups, and burpees, all while wearing a 20/14 lb weight vest. This is an extreme test of loaded cardiovascular endurance and overall work capacity due to the sheer number of rounds and constant load. |
| Stamina | 10/10 | Massive total volume: 104 strict pull-ups, 338 box step-ups, and 273 burpees, all vested. This will exhaust pulling, leg, and full-body (burpees) muscular stamina to an incredible degree. |
| Strength | 7/10 | Strict pull-ups require significant relative pulling strength, made much harder by the vest. The vest adds a constant strength demand to step-ups and burpees. This is a major test of strength endurance under continuous load. |
| Flexibility | 2/10 | Basic mobility for pull-ups, step-ups, and burpees, potentially made slightly more challenging by the vest. |
| Power | 3/10 | Burpees have an explosive component, amplified by the vest, but the WOD's emphasis is on sustained, controlled effort through extreme volume under load. |
| Speed | 3/10 | Pacing is absolutely critical for survival and completion. Efficient movement is key, but this is not about raw speed due to the extreme volume and load over 13 rounds. |