UnMetal - Unagi Blast Trophy & Achievement
4https://daynglsgameguides.com/2021/09/27/unmetal-trophy-achievement-guide/
This is earned on Stage 6 while piloting the submarine.
This boss is exactly what it’s name says. A huge eel. It will come out of the walls toward you with its mouth open. This Trophy/Achievement is all about timing. You can’t miss any of your shots. It will take exactly six torpedoes to kill it.
As soon as you see the head come out, fire a torpedo and move either up or down to avoid the eel’s attack. If timed correctly, the torpedo will be fired before the eel is coming toward you. The eel will open it’s mouth and the torpedo will go in blowing up inside it’s stomach. The eel is long, so you need to fire early in order for the torpedo to travel far enough inside of the eel. Make sure to move up or down right after you fire so that the eel doesn’t damage you.