Gun Mayhem 2 is a platform-based arena shooter developed by Kevin Gu and published by Rocket Jump Technology in August 2012. The core objective is to eliminate opponents by using weapons and explosives to launch them off the stage.
Gameplay
Gun Mayhem 2 requires effective movement and evasion. Players control a customizable character on a platform arena. Gameplay involves using abilities like jumps and double jumps to maintain position while using weapons to displace opponents.
Game Modes and Player Capacity
The game supports up to four players (human or AI).
- Campaign Mode: Features a total of 16 different levels, including boss fights and unique challenge scenarios (e.g., “Invisible Man,” “Dynamite Only”). The first two levels (Tutorial and Easy AI) are unlocked initially.
- Custom Game Mode: Allows players to select from 7 sub-modes, including: Last Man Standing, Last Team Standing, Survival, 1 Hit 1 Kill, Gun Game, Gun Game Reverse, and Jetpack.
- Challenge Mode: Contains 7 training scenarios designed to improve specific skills: Handgun Training, Shotgun Training, SMGs Training, Sniper Training, Assault Rifle Training, Dynamite Toss, and Crate Collection.
Controls and Input
The game utilizes complex control schemes to allow up to four players to use a single keyboard.
| Player | Movement (Left, Right, Jump) | Primary Shoot | Secondary Bomb/Explosive |
|---|---|---|---|
| Player 1 | Arrow Keys | Z | X |
| Player 2 | WASD | T | Y |
| Player 3 | Num Pad /, 7, 8, 9 | Num Pad * | Num Pad – |
| Player 4 | Num Pad 5, 1, 2, 3 | Num Pad 0 | Num Pad . |
Weapon Specifications
The game features 85 weapons categorized by type. Each weapon has specific capacity values for damage, rate of fire, ammo, weight, and recoil.
| Category | Weapon Count | Examples |
|---|---|---|
| SMGs | 19 versions | Compact Assault Rifle, Police SMGs, Slick SMGs. |
| Snipers | 19 versions | Single Shot Sniper, Military Sniper, Tactical Sniper. |
| Shotguns | 19 versions | Automatic Shotgun, Street Sweeper, Sawed Off Shotgun. |
| ARs/LMGs | 19 versions | Precision Rifle, Classic Machine Gun, Bullpup Machine Gun. |
| Other | 9 weapons | Pistol, Gold Pistol, Sandal Hawk, Minigun. |
High-Damage Weaponry
- Minigun (Other): This weapon has the highest values for damage, rate of fire, and ammo capacity across all categories. Its performance is offset by the highest weight stat, which reduces player mobility.
- Sniper: The High Power Sniper provides equivalent maximum damage to the Single Shot Sniper but features higher recoil capacity, offering more stability for continuous fire.
My Insight
Weapon effectiveness depends heavily on game mode. While the Minigun dominates large maps in Last Man Standing, shotguns like the Street Sweeper excel in the tight quarters of Gun Game Reverse.
During local 4-player testing, default Player 3/4 controls on the Numpad frequently cause ghosting/key-jamming on standard office keyboards. We recommend remapping Player 3 to an external USB gamepad to prevent input drops during multi-player Campaign Bosses.
Boss Strategy
Specific tactics are required to defeat campaign bosses:
| Boss Name | Strategy Focus | Key Tactics |
|---|---|---|
| The De Materializer | Vulnerability Management. | The De Materializer fires a continuous tracking laser every 6 seconds. Stand on the top-left floating platform until the laser charges, then double-jump to the bottom center just as the red indicator flashes. |
| The Terminator | Range Control and Aim. | Maintain medium to long range to mitigate powerful melee attack damage. Aim for the head and chest to inflict maximum damage. Utilize quick lateral movement to evade projectile attacks while maintaining target lock. |
FAQs
Q.1: How to unlock all 85 weapons quickly in Campaign Mode?
A: To unlock all 85 weapons quickly, prioritize completing the 7 Challenge Mode training scenarios first, as they unlock major weapon categories faster than standard Campaign levels. If you get stuck, switch to Custom Game on Survival Mode with 1-life AI bots to rapidly farm matches, and always focus on collecting golden weapon crates during battles, as unlocks are tied directly to crate collection milestones rather than total kill counts.
Q.2: How many players can play the game?
A: The game supports up to 4 players (human or AI).
Q.3: How to run Gun Mayhem 2 without Flash Player in 2026?
A: Since Adobe Flash Player was discontinued, modern web portals run Gun Mayhem 2 using web-based WebAssembly emulators like Ruffle or custom HTML5 remasters directly in any modern browser (Chrome, Edge, or Firefox) without requiring additional plugins. If you want to play off-site, you can install the Ruffle browser extension or download standalone Flash player emulators (like Flashpoint or Supernova Player) to run the game’s original .swf file smoothly on Windows PC.
Q.4: What are similar games available?
A: Games featuring similar physics-based 2D arena combat include Smash Karts and Stickman Supreme Duelist 2. A comparable alternative is Rooftop Snipers, which features similar 2D shooting mechanics.





