basically the player is giving his class promotion test and there are total 10 floor he need to complete ( only in nightmare mode)

thanks for your suggestion you can suggest if you have any ideas to substitute that with

but it is only limited to multiply till 10 level gap and if the monster is 30 level higher than player they would recieve no reward it was done to make sure player can't benefit by killing monster of higher level by reling on their number

the goblin was 5 level higher than player therefore the exp was multiplied by 5