CLAP CLAP CLAP
Not Updated For Current Season
The masteries shown here are not yet updated for the current season, the guide author needs to set up the new masteries. As such, they will be different than the masteries you see in-game.
This malphite has worked for me more than straight tank. With tank build I would lose too many trades and have no harass. This fighter build has some threat where people might not see malphite coming.
Get a bit of defense, then get attack speed for the W synergy, AP for the dmg boost.
Early- CS when you can, save mana for Q to be able to run away.
Once you have healthy mana + ring, harass with Q, then when the time is right go all in.
Late- Team fight, save ulti for clusters of their team when your squad is around. This build is good at pushing towers with W and the atk speed +AP.