Summary pulled directly from Steam - Some text may only be applicable to Steam platform

The cult classic twin-stick Isaac-like you've been looking for and probably missed!

• Fully playable with keyboard+mouse or gamepad.
  
• Play as a "head in a mech" harvested from the neck of everyone's favorite Space Hydra.
  
• Roguelite catacombs that evolve and expand with each of your successes.
  
• 9 starting mechs to choose from with a wide range of abilities: time control, shot magnetism, perk randomization, and more.
  
• 5 difficulty levels ranging from "Relatively Easy" to "Nigh Impossible."
  
• 350+ items, including active weapons, one time use consumables, and passive upgrades.
  
• 150+ regular enemies, 10+ minibosses, and 20+ epic bosses.
  
• 500+ rooms to explore, including the special condemned survival rooms.
  
• Level up during each run through the perk system which allows for varied build diversity.
  
• Buy upgrades from a variety of shops.
  
• Secrets! Among them "incredibilities" that massively change the way the game plays.
  
• Over-the-top mod support. Detailed wiki: create enemies, items, weapons, and rooms.