Although the Chamber of Secrets isn't the best HP game ever, it is still an extremely fun game.
The Good:
-Graphics and sound make environments seem real
-Wide arrange of spells
-A huge castle to explore with loads of missions
-Quidditch is really fun to play
The Bad:
-Less minigames than HP3
-Harry is the only playable charcacter
-Little replay value if you don't collect the Wizard Cards
-You can't revisit a level to collect the wizard cards from that level, so if you don't get any in LV1, then you won't have a full collection, ever.
-Some parts from the ps1 version, like the flying car, have been cut out.
Overall, Although the Chamber of Secrets isn't the best HP game ever, it is still an extremely fun game. The levels are fun to play and the final boss mission is great.
Overall, 8/10