The adventure was run with no prep other than looking at the lake and a picture of a boat for inspiration.
What followed was nothing that memorable, a boat-crawl that culminated in a battle with a serpent demon from the Frozen Hells. The guys had a blast with the snake, so I thought I'd share it here. Stats are somewhere between 3.5 D&D and an OSR block, so take of it what you will.
The Frozen God:
Move - 50
Attacks: Bite (1d6 cold damage + Save vs Poison (paralysis)
The Frozen God fights through domination, saving its bite for a last resort. Choosing the strongest looking foe, the serpent offers all other targets promises of power, plucking their heart's desire and framing it in a seductive air. They will have their wishes, if only they slay the Frozen God's intended victim.
The Frozen God's flesh is bitterly cold. Sucessful melee attacks inflict 1 point of subdual damage, and impart a chill that never quite leaves the character.
Finally, the Frozen God's flesh is scribed with writhing patterns of infernal runes, offering it a shield against spells arcane and divine. There is a 20% chance that the spell will backfire, resulting in a roll on the minor corruption table from DCC.
Not bad for a Level 1 mini-dungeon end boss, aye?