wow, ok, this is seriously stupid, the goblin last chapter gave him 3 exp and he leveled up from lvl 1 to 3, he kills one slug thing and gets 1 exp and instantly gives up, claiming it will take him decades to reach lvl 5 to evolve at this rate... even though its only been like 2 days, so he hunts down a much stronger monster that only gives him 11 exp, which together with the one from before leaves him at 12, and its enough to push his lvl to 5 instantly, this means lvl 1 ro 2 required 1 exp, lvl 2 to 3 required 2 exp, lvl 3 to lvl 4 something in the realm of 5 exp, and lvl 4 to lvl 5 required something like 7 exp if you was to divide the exp logically, could also be 1 less for 3 to 4 and 1 more for 4 to 5, but regardless, theres no way in hell it would take a freaking decade to get that amount of exp, he only have 1 life now that his resurection skill has been used, he should play it safer instead of taking such dumb risks, if the author want the story to move along faster, throw cureveballs at the MC forcing him to deal with stronger foes instead of stupidly persue them himself and just barely survive by pure freaking luck.