Within the game, there are objects on the screen known as 
big floating crystal or a checkpoints. These allow you to raise affinity, change classes, and they act as spawnpoints from when you died. They are mostly in plain sight, but some are hidden.
| Other Doom & Destiny: Advanced Pages |
|---|
| Game: About the Game • Basic Gameplay • Game versions (changelogs) |
| Characters: Classes • Urn & Spirit Locations • Special Class Abilities |
| Quests: Main Quest • Side Quests • Endgame Quests |
| Handbooks: Powers • Inventory Items • Resources • Gems • Weapons • Gear • States |
| Other Features: Arena System & Battle Postcards • Cosplays • Achievements • Easter Eggs • Secrets • World Map Locations |