Halo 2 Laso Co-op - Surviving the Prison Lift down on Gravemind 

The first strategy we attempted (worked out after a few tries) was to get into the prison and clear enough enemies for a checkpoint. (If this didn't work out, the Prison Skip would have been used to clear this part.)
We avoid doing the prison skip using a brute in the lift to go back up the lift to skip the prison section without breaking the game loads).
The bottom level in the prison is the safest to survive because the enemies have to go down those elevators to reach you.
Bonus Clip at the end.
I hope this video was helpful but only in Co-op mainly. Solo wise, doing the prison skip is the safer method.
This Halo 2 Laso run was a first attempt on this level.
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/ @knightnovaj
Thanks!