The Ren & Stimpy games were really tough. Mostly because the levels were long, poorly laid out, and you had poor control of your character. But they were based on a show that I liked at the time, so I was obligated to play them.
And, thankfully, I didn't have to slog my way through the game the hard way to see everything.
I went to the title screen
And before the word 'Veediots' is completely drawn, I pressed
L, R, A, L, R, L, B, R, X
To bring up a level-select menu.
Which was great, because now I could get a taste of all the levels.
Plus, some of the levels that you had to pick from weren't levels at all, but rather the between-level cutscenes
So I got to see those, too.