At a glance
Sand Marine is the end-encounter reference for Mission 4 of Metal Slug 5. It is followed by Mission 5.
Mission numbers refer to the original campaign order. Boss names follow the community mission reference; they are encounter identifiers, not official stage titles.
Coastal infiltration and underwater base
The fourth mission moves from a coastal base into a Slug Mariner dive. An underwater installation forms the middle of the route, which later emerges into a desert for Sand Marine.
The mission switches between surface and underwater movement. The desert is the final section of this same mission, not the start of a fifth stage.
Campaign reference: Metal Slug Wiki’s mission overview. Practice suggestions below are our own.
Make each reposition count
Try this focused practice plan during your run. These are optional goals to set yourself, not extra objectives or achievements awarded by the game.
Before moving, choose a stopping point rather than holding the direction indefinitely.
After a slide or jump, reassess your aim and the next threat.
At Sand Marine, prefer a position that leaves another response available to one that only gives a brief attack.
How do I reach Mission 4?
Progress through Mission 3 in Metal Slug 5 to reach this mission. A new arcade run begins at Mission 1.
The Play button selects this title in the collection. It does not launch this specific mission, change the original game’s difficulty or unlock later stages. Use the guides below to read ahead while your campaign follows its normal order.
Can I return to Mission 4 later?
In a solo session, pause and use Save State after reaching the point you want to revisit. Open the same title in the same browser and use Load State to restore a compatible saved point. Saving again replaces the previous saved point for that title; a link to this guide does not include your save.
Manual continues include free credits. Automatic continues can be changed in Options & Controls → Gameplay. Neither option is a mission selector. Read the save and continue guide.
Controls for this run
These are Classic keyboard defaults; saved bindings take precedence. Touch uses movement plus A / FIRE, B / JUMP and C / BOMB. Arrange touch controls before a long session, or see all controls.
On foot in Metal Slug 5, down plus B performs a slide; in a vehicle, down plus B exits it. SNK’s original control guide documents these actions.