Gunstoppable offers a "head-empty unbridled joy" reminiscent of games like Ultrakill, providing an action roguelike experience that prioritizes adrenaline-fueled combat over complex strategy. Players navigate maps, utilizing mechanics such as grappling, sliding, and wall-running to eliminate robotic enemies. The narrative centers on saving the player's family and overthrowing an oppressive ruling class, including the CEO responsible for the player's transformation into a weaponized individual.
The core gameplay loop involves dual-wielding a variety of weapons, including automatic rifles, knives, and rocket launchers. As players progress through levels, they can acquire randomly selected upgrades for their weapons. These can range from straightforward buffs like increased attack speed after taking damage, to more situational enhancements such as a "Supply Hook" that restores ammunition when using the grapple. One player's build focused on enhancing sliding abilities, transforming it into a primary mode of movement that also offered defensive benefits by reducing damage taken while sliding.
Gunstoppable features a roster of distinct enemies designed to challenge players. Among these are "Fluffy the Crab," a formidable foe that launches explosive spider-like projectiles, and "Jonny Jetpack." The latter is noted not only for providing a challenging fight but also for being voiced by Gianni Matragrano, the same actor who voices Gabriel in Ultrakill.
While Gunstoppable's action may be slightly more forgiving than Ultrakill's, it still presents a significant challenge, with players still striving to conquer its "Tower" progression. The game successfully captures the adrenaline rush that fans of the genre seek, making it a worthy addition for players in search of a new action roguelike.