One Giant Leap Achievement Guide
This is a guide for the achievement ''One Giant Leap'' which is part of the Rezurrection (Moon) DLC on Black Ops.
Basically what you have to do for this achievement is to die and spawn on your team mate in a certain way. Only 3 out of the 4 people can get this at one time.
Step 1: Play through the rounds as you would normally, the best place to camp would be in the dome (easy circling spots). Keep fighting through the waves until the woman's voice says breach in tunnel 11 and tunnel 6. Let the excavators breach the tunnel.
Step 2: When the second excavator is on its way the people who want there achievement make there way to one side of the map before tunnels 6 and 11 are blocked off by the excavators. But keep one crawler alive in that round and make sure the crawler is with the person who isn't getting the achievement as they will be on the opposite side of the map to the rest of players.
Step 3: Make sure both tunnels are definitely blocked off then the players who want the achievement cook a grenade and down yourselves, allow yourselves to bleed out.
Step 4: When there is only 1 player left (the guy with the crawler) kill the crawler to complete the round.
When the 3 players who died come back there achievement will pop.
this description was provided by WHiiTLEY off of Trueachievements.com.