Megabonk achievements

As Bandit, open every chest and pot in the first crypt on Graveyard before the timer hits 0

Discover in the secret room in the crypt on Graveyard

As Vlad, use Pot (stainless steel) to upgrade any weapon above its max level of 40

As Roberto, break every pumpkin on Graveyard

Kill Big Bob on Graveyard using only damage from the lamps - no damage from weapons or items allowed

Kill Spooky Steve

As Calcium on Desert Tier 2, summon and defeat the undead boss

Find on Graveyard

Kill Big Bob on Graveyard

Charge every Charge Shrine on a Tier 3 run across all 3 stages without leaving the charge zone

Survive the Final Swarm for 6 minutes

Defeat a Stage Boss without picking up any items, powerups or using shrines.