Crypt Killer

Crypt Killer, known as Henry Explorers in Japan, (ヘンリーエクスプローラーズ Henrī Ekusupurōrāzu) is a 1995 Light gun shooter video game by Konami, originally for Arcade platforms, but later ported to the Sega Saturn and PlayStation. The Saturn version made use of Sega's virtua gun which was developed for the Virtua Cop series of games. It was also compatible with the many lightguns produced for the PlayStation, namely the Konami Justifier. Scenery visuals and characters were all in 3D, while all the enemies were in "flat" 2D sprites. Despite its horror theme the game doesn't take the theme seriously at all, relying on extensive gameplay instead due to its difficulty.

Plot
The players are "crypt raiders" guided by Galazon, a spirit resembling a floating head to travel through variously themed caves and crypts in search of the "Eyes of Guidance" which would open the doors of fate. On their journey they are armed with a shotgun to fend off many mythical enemies, such as mummies, skeletons, fish-men, Gargoyles, and an array of other monsters.

Gameplay
One, two or three players simultaneous travel through levels "on tracks" in a similar way to Virtua Cop. At certain points on each level the players choose their path by selecting to go one of two different ways. This helps to keep the game varied for each time played. The opening screen allows one to select the order in which the six levels are played. At the end of each level, the player encounters a large boss monster - each guarding the "Eyes of Guidance" to defeat in order to progress. Such bosses include Medusa, a large Pharaoh's head, and a Hydra. As well as being armed with a shot gun, the player can temporally upgrade their weapon by finding concealed more powerful guns such as a gatling gun or a grenade launcher hidden behind breakable objects. Also, for each life the player has two bombs which can destroy all enemies on screen.