Acquire all database logs.
Unlocked: 21 Sep 2008 00:22:10
Clear any of Area 1 - 12 without firing your gun.
Unlocked: 18 Sep 2008 15:01:51
Obtain the Shin Guards, the Bulletproof Vest and the Helmet.
Unlocked: 14 Sep 2008 14:09:26
Obtain every weapon and weapon upgrade.
Unlocked: 14 Sep 2008 13:48:24
Cat burglar
20Get to the boss of Area 05 within one minute and thirty seconds.
Unlocked: 14 Sep 2008 13:02:19
Collect all twelve hidden Yashichis - one from each of Area 01 - 12.
Unlocked: 14 Sep 2008 12:57:22
Block 100 projectiles using the claw.
Unlocked: 15 Aug 2008 12:51:03
Clear Area 02 without touching a slime blob.
Unlocked: 14 Aug 2008 00:58:26
Kill all foot soldiers and enemy trucks on a Meet With Enemy sequence.
Unlocked: 13 Aug 2008 15:54:34
Acquire at least one star in each of the Challenge Rooms 1 - 56.
H4><0rz
10Hack through all the hacking games on Hard.
Clear the game on Super Hard.