Okay, so I have:
Tepig - Butterbean
Must solo Burgh without any fire type moves to become Pignite and must be Max Revived 3 times before becoming Emboar.
Spoink - Baco-Psy
Must solo four trainers on Reversal Mountain and five on Route 14 before becoming a Grumpig.
Piloswine - Dandruff
Must solo Marlon's Carracosta and use Ancient Power on it to evolve.
Venipede - Trollipede
Must have either a Att. or Sp. Att. lowering nature and only use moves of that stat. Must solo Roxie's Whirlipede to become one, and solo Elesa while paralyzed to evolve again.
Krabby - Spoilsport
Must always know Mud Sport. Must solo all of 20 trainers electric Pokemon. (It is impossible to get Krabby until you have the Super Rod which you don't get before the Electric Gym)
Sunkern (Male) - Flo
Must solo Clay to evolve (can't learn Petal Dance until it's a Sunflora). Must always know Petal Dance.
Thanks everybody!!! I shall start my adventure ASAP!