entitydef/pickup

Not all pickups can be spawned in every level. They can only be spawned in the levels they normally appear in.
For example, a Mega Health cannot be spawned in Hell on Earth.

Base Campaign

pickup/armor/large
pickup/armor/medium
pickup/armor/small
pickup/health/large
pickup/health/medium
pickup/health/small
pickup/powerup/berserk
pickup/powerup/onslaught
pickup/powerup/overdrive

Level Specific

pickup/ammo/bfg
pickup/ammo/bullets
pickup/ammo/cells
pickup/ammo/crucible
pickup/ammo/gas
pickup/ammo/rockets_single
pickup/ammo/shells
pickup/extra_life/extra_life_1
pickup/keycard/slayer_key
pickup/keycard/uac_blue
pickup/keycard/uac_red
pickup/keycard/uac_yellow
pickup/blood_punch_refill
pickup/dash_refill
pickup/mega_armor
pickup/mega_health
pickup/rad_suit
pickup/rad_suit_refill

The Ancient Gods - Part 1

pickup/extra_life/extra_life_2up

The Ancient Gods - Part 2

pickup/ammo/hammer

Cultist Base

pickup/keycard/cultist

Super Gore Nest

pickup/keycard/hell_flesh_blue
pickup/keycard/hell_flesh_red
pickup/keycard/hell_flesh_yellow

UAC Atlantica Facility

pickup/dive_suit
pickup/dive_suit_refill