Any tips for the final stage?

I'm not sure if you've cleared it already, but here's my take.

Get Health Potions. Rations from MGS1 and those Ration B* Unit from Chronicle. You need them both for Snake and Teliko to tank those hits from Metal Gear and the Patrol Bot respectively.


For Snape:

Get Stingers. MGS1 and MGS2 from the packs MGS1 and MGS2 (Duh)
You need as many of them as possible. 4 of each is great as it allows you to deal great damage at 100% accuracy.

Get Sniper Rifles. Mosin Nagants (MGS3 I believe) with loads of PSG1 (MGS2) and Sniper Wolfs as ammo and supplements respectively.
Mosin Nagants deal LOADS of damage and Sniper Wolfs ensure the accuracy you need to land your Terrible. Terrible. Damage


Get Movement Cards Genome Soldiers, Gru.Soldiers (Unknown Packs) are important, together with Running Man (Chronicle) in order to run when you think your gonna get hit by those Missiles (First Phase) or the Hyper Beam (Second Phase)

Lastly...

NOTE THE COST AND TARGET AREA

MAKE SURE that you are always not in danger of being hit of Missiles or the Hyper Beam. The Missiles are in a 8-direction 1 square splash effect from the centre area (marked in red)
The Hyper Beam will NEVER HIT YOU as long as you are by the side of Metal Gear. Note the cost and bring cost-reducers in order to ensure that you will not get hit.
O P
X X X

(Extends till end of map)
O = Metal Gear (Facing you)
X = Snake (Danger of being hit)
P = Snake (Safe)