Invincibility Bug
Invincibility glitch using a save portal.
Invincibility bug in Turok 2: Seeds of Evil.
With your health very low, stand in front of a save portal and let your character be killed. Press backwards into the portal while being attacked. Save the game and return. Done correctly, your character will have zero health but be invincible. Picking up any health removes it. You also cannot press Start while this bug is active.