After getting the required amount of Lifetime Happiness, select one of the following objects at the listed location to unlock the corresponding Karma Power.

Bless This Mess: Garden Gnome outside Landgraab house.
Casanova: Dance Club, near the restrooms.
Cosmic Curse: Graveyard at night.
Epic Fail: Statue at Goth's house.
Giant Jackpot: Bench near the Lighthouse.
Muse: Painting in the Art Museum.
Super Satisfy: Wrought Iron Trellis off the path near the Lighthouse.
The Riddler: Jet statue near the Military Base.
Winter Wonderland: Alcove near the Stadium.
Wormhole: Potted flower outside the Poet's Abode.