Drowning exists. Vaguely. Perhaps the ability to learn to swim? Also to prevent abuse, maybe you should get tired quickly and "fainting" leads to drowning. Maybe a giant sea monster on the world map to prevent swimming between New Attnam and the outside world. Areas previously only accessable through teleportation or levitation (Like Genefourx's lair in LIVAN) could have the water replaced with lava or acid or radioactive sludge.
I second the "more water" idea.
Also, a completely horrible addition - Midas' touch. Either a status effect or something permanent upon consuming or equipping a certain item. Turns everything you touch into gold. All your inventory, enemy body parts that are struck, walls being dug - the floor under your feet? etc.
Should probably be temporary to stop it being a nuisance.
Perhaps with a more flashy name?
Like... uh... Blade of Woe? Sapping blade?
Also I think we need more items referencing other things. And LIVAN's "tip sword of penetration" should be called Estoc IMO.
More artifact armor? If not more types of armor. Like footwear being boots, sandals, shin guards etc. And body armor being robes, plate, chain, fabric.