The Training Ground is an endless practice area introduced in the newer Grim Trials demo and accessed through Kai. It is designed for testing builds, weapons and abilities before taking them into the main Afterlife challenges.

How do you unlock the Training Ground?
Pre-release coverage states that interacting with Kai unlocks the endless Training Ground. Kai is a senior Reaper trainee introduced with the newer demo, so players using an older build should make sure they are on the current demo before expecting the feature.
What should you test there?
- Weapon rhythm: practice swapping between scythe pressure and moving crossbow shots.
- Skill Tree effects: compare attack-combo nodes without using a full boss run as your test environment.
- Gear effects: learn which crafted equipment changes are easy to notice in real combat.
- Build flow: identify whether a proposed setup is comfortable before optimizing damage.
What the Training Ground cannot tell you yet
A controlled practice environment is excellent for mechanics, but it does not automatically prove that a setup is best for progression, bosses or resource efficiency. Launch-day build testing should compare Training Ground performance with real encounters.