Don't speedrun Rosso Rabbit in Trouble
This is one of those games I played as a kid and had trouble with (though I beated it). Don't let the game's cute look and simple controls fool you, it gets challenging quickly. There's no health bar, so bumping into any creatures, spikes and bonfires will kill you. The MC cannot grab onto platforms' edges. But most importantly, there are NO life collectibles and you do NOT get lives for score points. The only way to get extra lives is collecting all vegetables of a kind on a level. There are 3 kinds of vegetables so you can get up to 3 lives when you finish a level. And cabbages are much harder to find.
In short, if you try to speedrun this game without collecting vegetables for lives, you won't survive for long. Maybe that's why this game is not on Speedrun.com.