For eclips : Wukong needs health in early 1v1, especially in high elo. Eclip’s part unable to provide wukong sufficient early stage capability in early game. (damage only but no health) ForHydra : Hydea is bad for 1v1 as a first item, unless you are smurfing or think enemy is dumb. Ax provide best 1v1 stats for most of top champ.
Wukong's E is magic damage When the game starts, Camille's passive records the most damage type received from each enemy champion. If Wukong used E, the passive would recognize only 100 magic damage and 0 physical damage from Wukong, so the shield would be magic. Only after more physical damage had been dealt by Wukong the passive shield would become physical again