Paintball mode was "won at hard cost" on GE64?
Maybe i'm not remembering it correctly, but I thought paintball mode was one of the early cheats I unlocked.
Invincibility, now that one was damn hard, something ridiculous like 2:45 on 00 Agent for Facility.
Edit: wow, 2:05.
And paintball mode was 2:40 on Secret Agent for Dam... which seems like a short time given how far you had to run, but I don't think it would be too hard (I believe the 4 alarms had to be destroyed on Secret Agent though, so it was probably tricky)
As for my opinion on which were best, I had the most fun with All Guns (and infinite ammo so I could actually use them) as well as slow animation, fast animation and then paintball mode.
I also had some good fun with the cheat (glitch?) in the bunker level where if you destroy the monitors in the GoldenEye room, all the rockets and grenades just float in mid-air where you fire them.
