Killer is Dead
The main character wields a katana called Gekkou with his right hand for attacks and to deflect bullets. It absorbs bloods filling up a meter, enhancing Mondo's fighting ability. Combos increase the attack speed and a moon slash can be performed as a powerful attack. His left arm has a cybernetic enhancement and it is called Musselback. Various operations can be performed with it and these required blood absorbed from enemies. It is also used to solve puzzles and discover hidden areas, with four functions for the arm in total. Mondo can turn it into a regular human hand to crack fingerprint codes or change it into a ranged sub weapon that shoots projectiles. Separate buttons are used to block and dodge. Defeated enemies leave behind body parts that recover health and blood. Yellow moon crystals are collected to upgrade skills and health gems can level up the maximum health level.
After each mission Mondo receives a payment based on his performance. It is based on statistics such as his completion score, total damage bonus, rescue payment and toughness payment, total cool kills bonus, execution time or guard break payment, along with a general rating. Upgrades through moon crystals are divided into three categories: attack skills, sub weapon skills and special skills, unlocked gradually and with a fixed progression for each type. In the main office different types of costumes for various character can be equipped (when unlocked) and there is a gift shop where cash can be spent on various items. One of these are Mika tickets, that have his assistant Mika come to rescue when Mondo dies, providing a way to continue.
There is also a mini-game where Mondo gets to seduce women by taking pictures with Gigolo glasses. By timing when they are looking away and targeting specific areas, sexy pictures can be taken to provide moans of ecstasy and briefly remove certain clothes, and these also reveal her desires, such as the type of gifts she likes. Timing is important to fill a guts gauge, because otherwise he becomes nervous.
The retail US edition was provided at launch as a premium edition (not with a different title) with additional content:
- Art book
- Soundtrack disc
- Killer is Dead: Smooth Operator DLC containing:
- Gigolo Glasses that provide X-ray vision during Gigolo missions
- Additional costumes for Vivienne and Mika
- Bonus Gigolo mission with Betty
- Additional episode called "Episode 51 – The Man Who Stole Blood" with the vampire Sebastian