It happens that I just cleared it on one life and I didn't get any different ending at all.
Does anybody know anything about this?
Is this another wikipedia shit hoax or am I doing something wrong?
This is how it is written there as of now:
Taito adopted a unique ending modality for this game. There are four endings, each triggered by certain actions in-game:
* "Try Again" Ending: Don't destroy Super Alloy Lantern (the player still must defeat Great Tusk).
* Good Ending: Lose at least 1 life during the entire game.
* Great Ending: Destroy Full Metal Shell without losing a single life during the entire game.
* True Ending: Destroy Hyper Great Thing without losing a single life during the entire game.
The three last endings will never trigger unless you destroy Super Alloy Lantern.