Here is the full list of all 6 Repella Fella: Prologue achievements.
You completed the prologue with the 'Brick ****house* power.
You completed the prologue with the 'Internaliser' power.
Silly narrator. He's very forgetful.
'Spare change' no longer needed.
Who needs change when you've booze?
You gave the homeless fella some cash.