Really cool game for the C64! So many good things about the game, the atmosphere and the pacing is fun, and the music is great.
As for weak points, the fighting is a bit tedious, as is the searching for missed items as the game map gets bigger. The repetitive music exaggerates the tediousness a bit. And it was really hard, only few lives and instant death traps did not mix well :( I was unable to finish it on a C64 after several tries, and eventually frustrated and reverted to playing it on an emulator with save scumming.
Although, feels odd to write so much about the negative points, since the game was definitely an entertaining experience! Got a little bit of C64 Treasure Island vibe to it with the structuring, and ending atmosphere somehow reminded of Pitfall 2. Looking forward to playing your other titles!