I've replayed this game a couple of times as an adult, and it's still a great game (especially since you're allowed to skip most missions if you fail too many times). I'll admit there's some frustrating missions (especially level 6, mission 6), but it's a lot of fun, not to mention hilarious.

I even went back and completed my childhood save file. That's not me finishing the main objective on my childhood save file. I mean the save file was mostly finished, and I took out the final "level gags" and wasp cameras, so yes, I have a save file with 100% completion.