Yeah, there's not a lot of media related to this game. I guess the only proof I can offer is a picture from the games instruction manual showing the game over screen. I don't believe these were mockups because the quality and lighting is so bad. You can see that it still shows 3 bars on the left. The game over segments will only light up when all lives (flags at the top) and energy is depleted. The 3 segments on the left are the remaining weapon. I recreated the scenario in MAME where I didn't use any of my weapon but got a game over and the segments for the weapons are on the right.

[Linked Image from i.ibb.co]