Adventures of Lolo (Japan)/PRO rooms

The "Pro" rooms are four extremely difficult puzzle rooms that can be only accessed by entering a specific password.

They were introduced in Adventures of Lolo (Japan), and were also "copied and pasted" into the compilation game Adventures of Lolo 2 (USA). The rooms in the American game are absolutely identical to the original ones.

Password: PROA
Hint: enemy hole

Password: PROC
Hint: fireball slalom