Destiny 2 Warlock BuildWarlock's Final Shape

For artifact also take Deep Alchemy, Piercing Sniper, and Unstoppable Fusion. Exotic armor needs to be Spirit of Assassin and Spirit of Synthos.

This build thrives when playing aggressively, even in end game content such as GMs. It abuses transcendence and lightning surge. Lightning surge alone should build light portion of trans meter, Unloved with all the strand artifacts should quickly top off darkness.

Pop transcendence and go in using lightning surge, be aggressive using it repeatedly. I like to throw grenade, slide surge, slide surge, grenade loop.

Use cold snap grenade to freeze groups and icebreaker to cause ignition. This can also be used on larger targets--you can alternatively fire two shots from Suspectum to causes freeze and then switch to Icebreaker. You get ammo back on shots against frozen targets and it will causes an ignition.

Specifically on Unstoppable Champs, I ADS to proc unstop, fire two shots from Suspectum, switch to Icebreaker and fire 2-3 shots--they should be finishable.

Invisibility is useful for survivability: lightning surge into groups or large enemies that have a couple of adds near by, it will proc synthos, due massive damage and you'll be invis. If you took damage, reposition and recover. If you're healthy, stay aggressive and repeat.

This build thrives when you use all of the tools and cycle. Use your primary to get all of the strand artifact perks going, freeze with cold snap and Suspectum, swap to Icebreaker to shoot frozen targets and use Lightning surge pretty much on cooldown. You should be transcendent a LOT. Song of Flame is your panic button or if you're in a high damage area and need to clear a room more safely.

You can alternatively run healing nade if you're struggling and need more survivability. If you're in a situation where you need burst damage, you can swap to nova bomb, but I think the build works best as is right here.