[i like dirt]

Alchemy ONLY gives a bonus to explosion potions. At 0 alchemy, you can do 10-20 damage per purple potion. At GM alchemy, you can do 20-30. So in essence, you get an extra point for each 10 skill in alchemy you have. It sounds little, but 30 damage with a purple potion is killer and you are guaranteed to do at least 20.

EDIT: Btw... Daft Punk kicks ass. Homework and Discovery are awesome CD's.