Good Strength and Life by Attacker standards.Access to Life-Steal as a form of sustain.Plus in Dark Wars he can benefit from his Dark Hater setup. In the Wars meta he can be a scary monster in the Undead Book, capable of one-shotting just about the whole restriction. Overall The Nefilslayer is an Attacker monster with a few interesting tricks, but nothing to really give him an edge in combat in the PvP meta. His Relic slots are very nice for him then, Sword of course boosting dmg and Armor giving some nasty bulk options on top of revenge options. The rest of the trait is pretty forgettable though. And a SC Self Random Hater can also be quite nice if he gets a good roll. His permanent Undead Hater, while situational, can give him a big edge in a War scenario given how he too is present within the Undead Book. His trait, just like his skills then, has a few interesting aspects. On the whole though while there are some aspects to this monster's skills that are interesting, he falls flat in comparison to other stronger Attackers out there. And aside from all of that the only other neat skill he has is a Self setup which gives him a Random Hater effect and Dark element Hater which can be interesting given how normally Dark monsters resist Nefil. He also has a few Single Fear skills which would be better if they dealt any dmg. Many of his skills also have Life Steal which is decent as Nefil is quite bulky. Now he does have good skills that set up some solid DoTs like Bleeding and Bane which is always a scary DoT to get hit by, but a few of The Nefilslayer's skills are more focused around his own raw dmg output and Bleed setup, like his strongest Single which is a Single 70 without any side effects. For an all powerful demon slayer, it's interesting how much he focuses on simple raw dmg to get the job done.

The Nefilslayer, kind of like Monster Legends' version of the all powerful DOOM Slayer, isn't actually quite as strong as one would expect. 2.1 That one Netflix employee when he doesn’t get his paycheck (He slays Netflix users now).

Competitive monster legends wiki