Tenebra (C64 / Plus4, Amiga, Atari ST & 8-bit, ZX Spectrum, Amstrad CPC, MSX, BBC Micro, Tesla Ondra) by Haplo

Tenebra is an atmospheric puzzle game with rogue-like aesthetics. Guide the hapless protagonist to the exit. Poor guy is afraid of darkness and refuses to walk in the dark areas.
Move torches around, push lights on rails, find keys to doors, light up cold braziers, pass through archways that collapse behind you, find oil barrels to make your torches brighter, squeeze through cracks in broken walls, fix broken rails with a hammer, illuminate the sensors to open the exits… do whatever it takes to get out of there!
The game contains 31 levels and works on both PAL and NTSC machines.
The Amiga and Atari ST versions come in two flavours; the classic 8-bit looks and the enhanced looks.
If you have enjoyed Tenebra, also check out Tenebra 2!