Shoot Many Robots

Shoot Many Robots is a run-and-gun action game released in 2012 for Playstation Network, Xbox Live Arcade, and PC (via Steam). You (and three of your closest - or not - friends) are P. Walter Tugnut, a gun-loving hillbilly in the midst of a Killer Robot apocalypse. Using whatever weapons he can get his hands on, Walter sets out to destroy the robot horde terrorizing his town.

Tropes used in Shoot Many Robots:

 * Angrish: The cat carrier weapon, which launches massive damage decoy bombs, has no description, only a note indicating that the writer is busy wallowing in his own rage. Its level 50 upgrade is one long, drawn out "fuck", which is used as both the item name (the "fu" half) and its description (the "ck" half).
 * Attack Reflector: You can punch red bullets and send them flying back at your attackers.
 * Awesome but Impractical: The cat carrier weapon. It's basically an instant kill, especially the upgraded one, but the bombs take several seconds to go off, you only get three, and the enemies may potentially launch the bomb off-screen where it won't do any harm.
 * Awesome Yet Practical: Shotguns have a knockback effect on smaller enemies. With an automatic shotgun, you can juggle dozens of enemies, pinning them to a wall or something until they die.
 * To say nothing of the revolvers that shoot explosions, or the level 50 gun that's basically a portable battleship cannon that can clear out mobs in a single shot. Or the one that's basically a detached missile pod from a helicopter that can be used to blanket half the screen in a single shot. Seriously, some of the guns in this game are as insanely awesome as they are useful.
 * Color-Coded Multiplayer: The various P. Walter Tugnuts are distinguished by shirt color. Your specific character will have an arrow over their head so you can keep track in the mess.
 * Dynamic Difficulty: When playing with multiple people, enemy strength (and number in survival maps) is based on the number of people playing and their level. The refill stations are also removed from play, making it harder to restock on the destination maps. The number of nuts required to reach each star level also increases, sometimes to the point of requiring 800k nuts to reach five stars. Paradoxically, this feature actually makes it easier to get five stars in most levels, as long as your team is well-equipped.
 * Embarrassing First Name: The "P" stands for "Pickles".
 * Exactly What It Says on the Tin: The Game
 * Ground Pound: Equipping a football helmet lets you do this.
 * Homing Projectile: The blue mobile turret enemies fire red bullets that can track the player. They turn just fast enough that you usually can't avoid them by jumping, but sliding can get around them if you have the room.
 * Infinity+1 Sword: The most expensive primary weapon in the game is an automatic shotgun that can deal out 20k damage a hit. If only one person has this in a multiplayer game, it's a safe bet they'll have more kills than all their allies combined. The battleship cannon is a close second, being slightly cheaper and slow to fire, but a lot stronger.
 * Joke Item: The baby carrier, which gives a +1 to Babies. That's it. The baby doesn't actually do anything. You get an achievement for wearing it through a level.
 * Killer Robot: Hordes of 'em.
 * Rainbow Pimp Gear: Though there are achievements for fighting in certain matching outfits, most of the time you'll be dressed in all manner of random crap.
 * That's What She Said: When you unlock the Hard levels, the captions will describe them as "A lot harder." Another caption will then pop up with this trope. The original calls him a jackass and tells him to shut up.