I haven't played the first Metal Slug on MVS yet.
I have only played X, 3, 4 & 5 only.
They need to rearrange the levels & put them all
together and make it hella! longer plus Metal Slug 6
should be added too. They need a life bar to get maybe
6 hits and then your character loses a life and the food
will restore your health.

The MS Series
is really fun but it is really hard!.

A good challenge
is great! but some games are impossible to beat without
any freeplay or game cheats sometime's.
I like different playing view's like the Contra game
and some flying missions will be like
Aero Figther 2.
Call it Metal Slug Special Missions.