In the Options menu, click on "About Gloom". When the credits screen appears, press the HELP key and the fire button simultaneously. During gameplay the following keys are active:



1 and 2 = Ammo

0 and ß = Health energy

---
Source: Amiga Future GTT

WALKTHROUGH TIPS:

Survival Tips:
- Stay near walls when exploring dungeons - no wall means no cover.
- Use slow walking speed in unknown areas.
- Narrow passages provide protection against too many enemies - pick them off one by one instead of fighting in the open.
- This especially applies to the seven levels of Gothic Tomb and Hell.
- Keep the plasma cannon fully charged when weapon powerups are available.
- Collecting same-type powerups increases fire rate significantly.
- The cannon can hold up to 5 charges. A 6th briefly gives double firepower (Mega-Weapon-Boost).
- Some enemies have equal or higher firepower than you - the Terranish Construction Droid can kill you in 4-5 plasma hits.

(Full German walkthrough covering all levels available in the Amiga Future GTT database)