Partner Bouncing or Partner Jumping is a tactic that can be done in both multiplayer and campaign.
How to execute Edit
To do this trick, have one player jump on to of a second player. Then, player 2 may jump up, and while they are in mid air, player 1 can jump off player 2, and will be able to reach a higher jump height, bringing some higher, and normally unreachable places, possible to jump on to.
Also, if player 1 jumps above player 2, and player 2 jumps on time and touches player 1, player 1 will be sent flying, similar to a Super Bounce.