That's impossible unless you use cheats.
you can't even if you use hp up or put it to lv 100... besides... its ability of wonder guard can keep him alive...
It let's the Pokémon with that ability use it's moves without letting the other pokémons ability interfear.
You can't; its ability Truant causes it to stop attacking every other turn. However, if you are Double Battling then you can have a pokemon use skill swap on slakoth/slaking to switch its ability with the other pokemon.
It lets that Pokemon use moves without the other Pokemon's abilities interfering. Like, you can use physical moves on Pokemon with static without becoming paralyzed, or you can use any move on a Pokemon with wonderguard.
When the ability Pressure is in use, the Pokemon using it makes the enemy Pokemon use more PP when it uses its moves.
Pokemon didn't have abilities until Generation III.
Use a Pokemon with mean look, or use a Pokemon with a trap ability.
Use a Pokemon with the ability magma armor or flame body (Slugma's ability usually)
You don't actually select when to use a hidden ability. Say your opponent tried to run from battle or tried to switch pokemon, the Arena Trap hidden ability would stop them automatically. (If you opponent is a flying type of has the hidden ability "Levitate" then the Arena Trap ability wouldn't work, but it works for all other type and abilities).
use action replay or a pokemon with the "flame body" ability
I use a Zigzagoon the higher the lv the better items it will pick up.
Yes ! it is true depending on the trainer's ability to use Pikachu effectively.