METAL SLUG 3

Before starting the game, go to the settings and select the difficulty level "1". Also set yourself the number of lives to 99. And still try not to waste lives in vain.

At the end we kill the boss in two stages: first, quickly, without sparing the grenades, we destroy all the aliens, then we shoot upward at the UFO dome. We don’t stand still, because... Marble slabs will constantly fall. We try to shoot at the fallen slabs first so that they go underground faster. Otherwise, you will have nowhere to run, and the last marble slab will become your tombstone.