im looking for the novel where the mc is a s hunter or some like that, im not sure if he was a hunter, he can copy the skill of his assesin. If i'm don't wrong, that novel was in pause and has more of 100 chapters.
Could you give some more info like what kind of plot it had or something that happened in it? Do you remember if it was CN/KR/JP? You could have a look at this list https://www.novelupdates.com/stag/ability-steal/?sort=5&order=2&status=1 Since there is a tag for ability steal and there are only about 20ish novels that have ability steal and +100 chapters so it should be on here. It does sound a bit like To Deprive a Deprived Person where the MC has the power to steal skills and a bunch of assassins are sent after him and he always steals their skills, he's also a hunter/adventurer though not very high ranked at first it was also put on hold for some time but has been picked up now.
The mc was a hunter or a mercenary. In the story, after kill an enemy, he stole a skill whit the capacity of stop the time for 7 seconds
Sorry to say nothing rings a bell at the moment but hopefully someone can help you out. From the info you've given he was a hunter or mercenary, had the ability to steal the skills of ppl he kills, he stole a skill that lets him stop time for 7 seconds and there are 100+ chapters translated. Someone should know about it with that many chapters, just hope someone who reads this knows it