In Stage 1, you're cornered by Alien Zarab. Cue Ultraman letting loose a Specium Ray.
At the end of stage 2, when an anti-riot officer shows the protagonists an unused sedan, he offers to hold off the Legion soldiers while the protagonist/s and Yuki escape from the downtown area.
The Patlabors will come in to the rescue, especially in stage 4 when Yuki is taken captive by a hostile Grau Bear mech pilot. At one point, they fast rope into an abandoned building.
The Patlabors and the Griffon fighting in the downtown core in stage 7. The protagonist actually gets to pilot a Griffon Labor in stage 7. It's as awesome as it sounds.
In stage 10, it seems the Gyaos have you cornered on the tower. Then Gamera shows up and turns them into flaming chunks.
Ultraman Belial managing to fight Ultraman and Ultraman Taro at the same time and still hold the advantage and nearly win. Then Ultraman Zero arrives and helps turn the tables on him, allowing them to destroy him with a Combination Attack using the Specium Ray, Storium Ray, and Zero Twin Shoot.
Despite taking a heavy beating, Ultra Seven managing to pull off a Heroic Second Wind and beat Pandon.
The ending implies despite all the odds, the benevolent giants won.