What does luck do in Vampire Survivors?

Question

What does the Luck stat do in Vampire Survivors? I know Luck can affect the chance of getting an extra upgrade choice when leveling up, but does increasing Luck affect anything else? (Item drops, chest contents, etc)

Answer 1

Luck increases:

• The chance of getting a fourth option to choose from when leveling up
• The chance of getting Pickups other than Gold Coins or Coin Bags when destroying light sources
• The respawn rate of light sources
• The chance of getting more than one reward from a Treasure Chest
• The chance of dealing critical damage with the Knife, the Thousand Edge, the Bloody Tear and the Heaven Sword
• The chance of the Pentagram not destroying Experience Gems, Treasure Chests and Pickups
• The chance of the Cherry Bomb exploding
• The chance of spawning additional stage items
• The chance to be offered weapons already in your inventory

Luck reduces:

• The chance of "negative events" such as Swarms and Flower Walls

Source, Vampire Survivors wikia.