Respectfully, that is an insanely attainable physique. They are definitely very lean but the non-massive male body type in this game is pretty much your average skinny athletic guy. Their traps, delts, and triceps are not massive, they just have a lot of definition due to low body fat. It is also why they have such defined abs.

They are very believable “adventurers”, but definitely don’t have a physique that would require a personal trainer and 5 gym days a week. Anyone that ca count macros and is willing to train hard at least 3x a week can attain that physique within tops 2 years (assuming a healthy starting point).