Dragonslayer's Axe

The Dragonslayer's Axe is obtained by following Sirris' quest line into Irithyll. This weapon is among some of the powerful weapons you can two-hand at SL1. The axe has built-in lightning damage and you can buff it with Gold Pine Resin or another elemental buff for some extra damage output. Lightning is effective against many enemies and various bosses.

High Lord Wolnir

SL1 High Lord Wolnir, Dark Souls III

SL1 Cheese High Lord Wolnir, Dark Souls III

This boss is easy to cheese with Poison Mist; ensure you have at least Ashen Estus Flask x 5. Two casts of Poison Mist are enough to poison Wolnir. The melee fight can be frustrating because the boss tends to move his arms around and breathes a mist that can rapidly drain your HP. Inflict maximum damage by triggering the effect of the Red Tearstone Ring, equip Flynn's Ring and unequip all armour pieces, and buff the Raw Broadsword+10 with Gold Pine Resin.

Irithyll of the Boreal Valley

SL1 Sulyvahn's Beast on the bridge, Dark Souls III

Light the Irithyll of the Boreal Valley bonfire. Defeat the Sulyvahn's Beast on the bridge to receive Pontiff's Right Eye, a ring that boosts your damage output as long as you spam R1. Light the Central Irithyll bonfire. Backtrack to the Irithyll of the Boreal Valley bonfire, find Sirris' summon sign, and be summoned into Sirris' world to help her defeat Creighton. Then warp back to Firelink Shrine, exhaust her dialogue, and be gifted with the Silvercat Ring. Exhaust Greirat's dialogue, send him on his second pillage mission, and warp back to Firelink Shrine to trigger his departure. To ensure his safe return, defeat the Old Demon King.

Old Demon King

SL1 Old Demon King, Dark Souls III

SL1 Old Demon King versus Composite Bow, Dark Souls III

SL1 NG+7 Old Demon King poison & toxic, Dark Souls III

This boss is weak against dark and resistant against poison, but can still be poisoned. Use the poison infused Rotten Ghru Dagger+7 to inflict poison, then buff the Raw Broadsword+10 with Human Pine Resin. Alternatively, use Poison Mist to inflict poison on the boss. Defeating the Old Demon King should trigger Greirat's safe return to Firelink Shrine, where he now sells Lightning Bolts among other new items.

Irithyll of the Boreal Valley

How to get Dragonslayer's Axe, Dark Souls III

SL1 How to cheese Creighton the Wanderer, Dark Souls III

Undead Bone Shard at Irithyll of the Boreal Valley, Dark Souls III

Light the Church of Yorshka bonfire. Exhaust Anri's dialogue to receive the Ring of the Evil Eye, after which you can kill Anri to collect Anri's Straight Sword. Go outside and trigger Creighton to invade you. Defeat him and be rewarded with the Dragonslayer's Axe. The axe has built-in lightning damage and can be infused with a Raw Gem. Buffing the weapon with Gold Pine Resin/Bundle further increases the lightning damage, making the axe effective against many strong enemies and bosses. An Undead Bone Shard is found behind a tombstone, near where Creighton invaded you.