240 points improvement in FC1 (ridiculously impossibly hard, not recommended):
After getting hands, go into the tunnel, grab the 1st and 2nd Gem, then get the 2 Gems on the far-off mushrooms, then get the 3rd Gem outside the tunnel. Quickly jump on the side of the smallest mushroom without grabbing the Gem. Roll off, quickly get to the trampolines, and roll into the 2nd trampoline to grab the Gem floating in the air. This is ridiculously hard, took me about 500 retries on emulator. After that, grab the Gem on the left side, then grab the Gem on the right trampoline. Continue along the path to collect 3 more Gems, fall down and collect 3 Gems on small mushrooms. Grab the 1st Gem on the bridge, strafe around the 2nd one, then go for the 2 Gems on the wood. This also took me about 500 retries. After that, fall down, collect 3 Yellow Gems, then 3 Red Gems, then 5 more Yellow Gems, Matuvu, Red Gem.