Tier 3 promotion quest was unlike tier one and two where there was a definitive test given to a user , with a parameter on which he/she would be evaluated.
Instead tier 3 was more of a perpetratory stage , meant for the refining of the human body to its utmost limit , making it suitable for a chance to break through into Demi god realms eventually.
Although Rudra did not understand it yet , the concept of a tier 3 power level was same as a golden core cultivator. Where the core would nourish the nascent soul for years before eventually the soul breaks free and the cultivator advances realms.
Ofcourse , tiers were not like cultivation and Rudra was not forming any cores or nurturing any nascent souls. However he was indeed going to undergo tempering , where he would come out a stronger player .