Rudra stepped into the tier ascension test arena..... Each class had their own criteria for judging .... For knights class it was a test of everything. A test for each of your five basic stats . 

For wizards their physical prowess mattered less and their intelligence mattered more and soo did their mana stat , hence they were tested on those criteria's only to progress. 

However knights were tested on everything , comprehensively being evaluated. For each basic stat there were three different levels , clearing all fifteen levels one could gain a SSS assesment , 14 would earn SS , 13 would earn S , 10-12 would earn A , 7-9 B 6-7C and 5 would earn D , any less than that and you could not tier acend. 

Rudra was mentally prepared for this test , he had knowledge about it thanx to his previous life experience, however clearing the stages was still a feat he needed to accomplish himself. 

The first test will be a test of stamina , stage one will commence in 30 s , prepare yourself adventurer. A system notification rang. 

Rudra was transported into a long white hall , with a single black line in the centre seemingly running for infinity. He could not even make out the dimensions of the room , wether the floor he was standing on would still be there if he moved 3 meters to the left was uncertain , as white as white can be the room started to hurt Rudra 's eyes distorting his vision .

Run along the black line for as fast as you can and reach the finish line . The system sound said 

3....2....1 .... Go! The countdown ended and Rudra sprung into action , he took the marathon approach rather than dashing madly , however his cadence was by no means low ... If compared to a real world race , it would be like he was running in a 800m race. However the thing is there was no finish line in sight , he had no idea wether he needed to run 80m or 800m or 8 km. If he were to run too slow , he will miss the time limit and fail the trial , if he ran too fast he would burn up much faster and may not be able to complete the race. Hence Rudra chose the moderately high pacing. 

According to his estimate the race should be about 1.6km long taking about 3-5 mins for average people to complete. However the problem laid in the layout of the room , with not being able to judge the distance properly it was a mental burden , a minute felt like 10 and the distance seemed never ending. 

However such things cant affect Rudra with his knowledge of the race ... He easily cleared the first stage. 

First stage of stamina test clear.... Commencing second trial in 30s , prepare yourself adventurer. 

No catching your breath , next challenge was up in 30s. 

Clear the underwater course in minimum possible timespan. the system notification rang. 

He was teleported underwater , with heavy steel balls being chained to all four of his limbs. Also there was an obstacle course that required him to swim up , down left right and even diagonally to move through , all while wearing the metal ball chains , without oxygen. 

Rudra knew that he could at max stay 3 mins without oxygen before he is teleported outside because of being extremely fatigued. There was no point in conservation of strength now. He needed to go all out. And all out he went. 

Swimming with all his might , he was going through the obstacle course all while his cardiovascular system went into overload trying to cope up with him. Rudra took 2 mins and 18 seconds to clear this trial. After being teleported back into thr test area he sat flat on his back gasping for recovery. 

Stage 2 clear , commencing stage 3 in 30s , adventurer prepare yourself. Rudra cursed '********, let me have a minute will you '

However regardless of his will he was teleported to test 3 

Welcome to the gravity suppression chamber .....Climb 100 steps with each 10 step increasing a G force. You have 20s for each flight of 10 steps. Start in 3....2....1...Go! 

Rudra had no time to relax, however making the most of the 20 seconds given he climbed at a slow pace for the first 10 steps. 

Gravity was increased to 2G 

It was little uncomfortable however bearable. He took around 18 seconds and confortably cleared the stage .

Rudra felt a little less fatigued now , taking a few seconds as a breather , but he had no time to relax .... He went on to climb the next 10 steps at 3G .

He could feel the weight on his steps now , his cardiovascular system had undertook immense strain upto this point , and was ready to call quits 

4G was even harder it took him 15 seconds at full power to hustle through 4G .

5G was where Rudra became to be burdened mentally , he was feeling an extremely strong suppression , not enough blood was reaching his brain . 

He barely cleared 6G 

7G is where his vision started to distort and he started to sway left and right. Crawling and clawing his way up though , not willing to give up he somehow cleared 7G in 19.7 s 

But that was it , he collapsed at 8G .

However unknown to him , he has long cleared this stage at 5G , every stage above that were a bonus evaluation . 

Stage 3 cleared. All stages of stamina test cleared , congratulations adventurer , we shall commence the physical strength test after you completely regain your stamina . Saying that the system provided the panting Rudra with a stamina recovery potion to be drunk , the system was considerate enough to have the lid open as Rudra was not even in a condition to open the lid. 

Downing the liquid Rudra just waited till the feeling returned back to his limbs.

///Author's thoughts : Do you guys want the mc to gain a legendary subclass , or do you want him to gain a common one??? Let me know in the comments ///