Killer Loop Game System: Sony Playstation Cheat Category: Cheat Game Company: Crave Game Category: Action Hint, Cheat, Walkthrough:   Killer Loop =========== H&K Class 2: At the main menu, hold Start and press Down, Left, Up, Left, Down, Right, Up, Left. H&K Class 4: At the main menu, hold Start and press Down, Right, Up, Left, Down, Left, Up, Right. Pulse Class 2: At the main menu, hold Start and press Up, Left, Up, Left, Down, Left, Up, Left. Pulse Class 3: At the main menu, hold Start and press Down, Left, Up, Left, Down, Right, Up, Right. Pulse Class 4: At the main menu, hold Start and press Down, Left, Up, Right, Down, Right, Up, Left. Reac Class 1: At the main menu, hold Start and press Down, Left, Up, Right, Down, Left, Up, Right. Sinus class 2: At the main menu, hold Start and press Down, Left, Up, Left, Down, Left, Up, Right. All Tracks: At the main menu, hold Start and press Up, Left, Down, Left, Up, Left, Down, Right.