Go to the "Research Center" in town and approach the steps, then turn 90 degrees to the right before climbing up. Walk directly to the blockaded gate. Go around the blockages to reach the gate, which is locked by a pair of beams. Then, climb up the gate by jumping and walking forward until reaching the top. Your character can not fall off the opposite side. Walk on top of the gate and get on the wall to the right. Walk on top of the wall, towards the church and Hammond's house. A niche will appear on the top of the wall. Step on it to reach the secret level containing all weapons, two gold bars, a raptor, and other strange objects.
Press CTRL + F11 to display the console prompt at the bottom left corner of the screen. Then, activate the following cheats by entering the corresponding codes:
CHEAT FUNCTION - CHEAT CODE Higher jumps, but slower running - bionicwoman View location coordinates - loc View ending sequence - win Increased gore level - gore 2 Dinosaurs paused - dinos Shows objects or items that are interactive - bones Unlimited ammo - woo Transport to important locations on current level - tnext Causes fatal error - gore, sort, or imouse Heal damage [NOTE 1] - invul Sort textures from front to back - ftb Sort textures from back to front - btf Inverts mouse directions - imouse Teleport to indicated coordinates - tele
NOTE 1: This code does not enable invincibility. It allows damage to be healed, but does not prevent death.