The Lolo games are pretty tough, but maybe you've gotten pretty good that them. You've practiced enough and can finish the levels backward and forward without batting an eyelash. You're ready for the Pro levels.
The second Lolo game has four Pro levels, accessible by going to the password screen and using the password PRO*, where "*" is either A, B, C, or D, depending on what Pro level you want to play.
And these levels are doozies, check 'em out.
Pro A:
Pro B:
Pro C:
And Pro D:
And, yeah, there's only four of them, but they're tough. But you're up to the challenge, right?