For black pants: get the shell on the oily platform. Fire the cannon to go there, and quickly jump. DO NOT HIT THE SHELL! Then, when you're not moving anymore and standing on the oil, jump on the shell and when it's beginning to fall, jump against it.
The Fanciest Pants
Dude! You just completed the The Fanciest Pants achievement in Fancy Pants Adventure: World 2 and won the The Fanciest Pants badge and 30 points!
View all badges.
Easy peasy.
Grenade launcher ftw.
Hell Dining
Dude! You just completed the Hell Dining achievement in Storm the House 3 and won the Hell Dining badge and 15 points!