Enemy: Tempest of Violence is an action-puzzle game with a violent and claustrophobic sci-fi setting for the Commodore Amiga, released in 1997 under the label Anachronia. The game was developed by André Wüthrich and contains some music and graphics by Michael Tschögl, with whom Wüthrich had previously collaborated on several games. It was published at a time when the Amiga market was already in decline—a serious eye disease had forced Wüthrich to pause development for an extended period. Amiga Format reviewed the game in August 1999, awarding it 80% [Review1]. User reviews on Lemon Amiga have been enthusiastic, with one reviewer calling it "one of the most underappreciated" Amiga games that "would have been a commercial hit in the mid 90s" [Review2], though they also noted that the game is very difficult.

The game features 34 time-limited levels with varying objectives, such as rescuing survivors, destroying alien eggs, finding weapons, or killing aliens. While the objectives of each level are predefined, their locations may change between playthroughs. Wüthrich has cited Prince of Persia, Another World, and the film Aliens as key inspirations for the gameplay [Source1], which combines action and puzzle elements in a side-scrolling, flip-screen presentation. The graphics are rich in blood and gore, with dead bodies strewn throughout levels to add atmosphere and build suspense. Using somewhat unconventional controls—such as pressing down to jump—the player character can perform advanced maneuvers including double jumps and walking backwards while shooting. Another distinctive feature is that the avatar nods to indicate a safe pit, or shakes their head to warn that falling would be fatal. The game also includes a help system that displays symbols, such as a light bulb to indicate a riddle must be solved [Source2], and enemies with advanced behaviours, such as reacting to the noise of the player's footsteps [Source3].

Enemy: Tempest of Violence has no dialogue or cutscenes. The intricate story is told between levels in the form of long text passages. An interesting aspect of the narrative revolves around befriending some aliens, which breaks with the common trope that humans are good and aliens are bad.

A sequel called Enemy 2: Missing in Action was released in 2013. It featured thirty new levels, a continuation of the story, new puzzles, and non-linear gameplay, adding up to around eight hours of content. The project came about after a fan contacted Wüthrich and motivated him to continue the series. A limited Collector's Edition of only 200 copies was produced in 2016.

The game found renewed appreciation in the retro gaming community, particularly after Twitch streamer Macaw45 completed an epic 50-hour playthrough in 2021. In 2022, André Wüthrich released an anniversary edition of Enemy: Tempest of Violence, which is not a sequel but an optimisation of the original. The games were designed to run on all Amiga models with Kickstart 1.2 system software or later, and require at least 1 MB of RAM. At the time of writing in January 2026, the anniversary editions are available for free download in English and German, including the manuals from the Website.