I am trying to remember the name of a PS1 game that I played when I was little. What I can remember is that you first start in a building (it wasn't tall it was like a secret compound), there were guns involved and you tried to get in the compound as there were some enemies. I remembered that in this building you could hit a soda vending machine, which caused to drop a soda that you could drink, but with no health benefit whatsoever, never mind, almost at the end of the level you ended up in a sewer like section and the level boss was some kind of alien/robot. I know there is very little information about it, but I tried with a lot of game titles and none of them looked like this game I played. Hope someone can help me.