Search for "Reaper Tale Of A Pale Swordsman ALiAS Cheat Engine table" on trusted forums like FearLess Cheat Engine or Cheat Engine’s official forum . Look for the latest patch version (e.g., v1.0.2 or v1.1).
For the uninitiated, ALiAS is a well-known table creator in the Cheat Engine community. Their tables are famous for being stable, easy to navigate, and packed with features that go beyond simple "infinite health" toggles.
Don’t use the table on your first playthrough.
Open Reaper first, then Alt-Tab to your desktop.