Tidehunter is a melee character. His primary attribute is strength. The hero is mainly taken as a hardlaner. Most effective in the mid and late game.
Tidehunter is a very durable hero. Kraken Shell makes him a good frontlaner. The Gush ability allows the character to weaken the target unit making it more vulnerable to physical attacks, and after buying Aghanim's Scepter, the ability gets the AoE effect and can hit several enemies at once. Anchor Smash is a strong ability that prevents an enemy carry from getting too close to Tidehunter or creeps. The main feature of this character is his Ravage ultimate, which can turn the course of the battle to the hero’s advantage, which makes him one of the most dangerous initiators. Aghanim's Shard grants the Tendrils of the Deep ability, which is a mini version of the ultimate that allows the character to initiate fughts more often.
Leviathan is the mighty protector of the Sunken Isles. He was tired of all those wars for underwater routes and left his native waters led by his abyssal god, Maelrawn the Tentacular. He stalks the shallows now in search of Admiral Kunkka, who has long been his nemesis for reasons lost in the deepest trenches of the sea.