Difficulty

There are 4 difficulty levels.

Recruit
Starter difficulty, enemies have normal behavior. Pickups are common.

Veteran
Enemies are resistant to hits, have high health, are aggressive and hit hard. Pickups are uncommon.

Champion
Enemies are very resistant to hits, have very high health, are very aggressive they and hit very hard. Pickups are scarce.

Legend
Enemies are ridiculously resistant to hits, have a ridiculous amount of health, are ridiculously aggressive and hit ridiculously hard. Pickups are ridiculously rare.