Most players use a dedicated mod rather than manual scanning. A popular one is the Jong Games Cheat Mod available on How to install:
: Only download from the official Cheat Engine website . symphony of the serpent cheat engine install
Cheat Engine by itself is just a scanner. You need a Cheat Table specifically for Symphony of the Serpent . These tables contain pre-written scripts for infinite health or one-hit kills. Most players use a dedicated mod rather than manual scanning