The Ice Witch

The Ice Witch is an achievement/trophy in the first Bayonetta game that is unlocked by freezing 20 enemies with Odette.

Description
"Freeze 20 enemies whilst wearing Odette"

Guide
For this achievement you will need Odette. To freeze an enemy you must use in a series of combos. There is a chance to freeze an enemy when they are kicked; its suggested to do either 2 Bullet Climaxes or use the Charge Modifier. Those are most likely to freeze and enemy, especially in combo attacks.

The freeze works on pretty much all non boss enemies.