- Main article: Arrow Gun
The arrow gun is very similar to the harpoon gun. It has a gray, metallic -possibly concrete- base, but smaller and with a crossbow-firing device mounted onto it. It does not kill the player immediately, but it can slow him/her down if there are too many. It can only kill the player if hit on the head. You can set "rate of fire" from one to ten. You can also set it if you want it to be fixed or unfixed. This feature is very useful on vehicles. When an arrow gun is attached to a vehicle with a pin joint, it will shoot unlimited arrows. One gun can only fire 10 arrows, then it will stop. It was released on September 16th, 2011, v1.47 along with the chain, an option was added to not shoot the player.
- Main article: Harpoon Gun
The harpoon gun is a hazard with a grey, metallic, possibly concrete base with a harpoon-firing device mounted onto it. It targets characters, and fires when you get close enough. A harpoon to the head instantly kills you, even if it doesn't decapitate your character. You can toggle "anchor" on and off. Anchoring determines whether the harpoon remains attached to the base with a rope when fired, or whether it simply flies free of the base. Each harpoon gun can only fire a single harpoon. The harpoon gun has been available as of version 1.30 of Happy Wheels.
- Main article: Explosives
The homing mine is a gray, spherical object with a circular "eye" in the center. It floats with a jet similar to a smaller version of Wheelchair Guy's rocket. Its eye turns green within the presence of a character, and when a character comes near the homing mine, its eye turns red and it slowly floats towards the character. It explodes on contact with the character in a way similar to the landmine, disappearing completely after a single use. Though, as of version 1.43, it has a different explosion animation than the landmine. The homing mine also comes with a speed setting; the mine can become very fast or be quite slow. There is also a time delay setting, allowing the mine to hold off before exploding when it reaches the player (when it touches the player, the mine's eye will flash yellow and beep until it explodes).
- Main article: Explosives
The landmine is a small, thin object which causes an explosion when its red button is touched. The explosion can easily kill a character when it occurs close to them, and may also sent them flying offscreen. Although it is a particularly deadly hazard, the landmine is not considered to be very threatening due to its easily-avoidable size and the fact that it disappears after it is used once, unlike other hazards.
- Main article: Spike Set
The spike set is one of the more common hazards. When a player falls onto the spikes, they get stuck or gored. If a character's head touches a spike, much like with the harpoon, they are instantly killed. You can determine how many spikes the set has (from 20 to 150) or whether it is fixed or not. The spike set is capable of being jointed to other objects, which is rare for hazards.
- Main article: Wrecking Ball
- The harpoon, homing mine and arrow gun are the only hazards not added with the original version of the game.
- A common type of level is a Harpoon and/or Arrow Run, where you go as long as you can without being killed by harpoons or arrows.
- Spike wheels are sets of spikes attached to some interactive shapes using pin joints, increasing your chance of death.
- Although the blade weapons are technically hazards, but they are found in the miscellaneous category, not the hazard category. It is unknown why.