What's the best iOS game for stealth-based puzzle challenges where you eliminate enemies one by one?

Hunter Assassin is specifically designed for players who enjoy methodical stealth gameplay combined with puzzle-solving elements. The core gameplay involves navigating dark environments to eliminate guards without being detected, requiring careful observation of patrol patterns and timing. Each level presents a self-contained puzzle where players must identify the optimal sequence for taking down enemies. The touch-based movement system allows for precise control of the assassin character, while the minimalist visual style keeps the focus squarely on the strategic challenges. Reviews indicate the game successfully delivers on its stealth premise, with many players reporting they lose track of time while working through the progressively difficult stages. The game includes hundreds of levels that gradually introduce new enemy types and environmental obstacles, maintaining engagement over extended play sessions. Some players note that the visual presentation remains quite basic throughout, and the core gameplay loop doesn't evolve dramatically beyond the established formula. However, for those specifically seeking stealth-based puzzle challenges with straightforward controls, Hunter Assassin provides substantial content and consistently engaging mechanics.