Wha?! ... Six... Sixty-two?! That's impossible....Cardan upon seeing the Gauss rifle
In the past, Cardan was part of a team of researchers and engineers working on Project 62, a top secret research project conducted in southwest Zaton, more specifically under the Iron Forest anomaly field. The project seemingly collapsed or was shelved in 2004 due to the engineers being unable to produce a power source compact and efficient enough to be used.
After the Zone formed, he returned as a Stalker along with two other comrades, Joker and Barge. After a fierce argument, they went their separate ways with Cardan staying aboard the Skadovsk as the resident technician. He is a notorious alcoholic, a condition that is exacerbated by his bitter dispute with Joker and Barge so much so that by the time of Call of Pripyat, he requires alcohol just to function.
Call of Pripyat
His upgrade tree is dependent on his vodka consumption in tandem with the tools he currently has: one bottle will unlock most of the first tier of upgrades, two bottles will unlock the second and third tiers. However, if given a third bottle, he will become too intoxicated to work; he will simply slump in his seat and mutter garbled phrases when conversation is attempted, forcing the player to wait an entire day for Cardan to become sober again. Due to the fact that the third-tier upgrades are only unlocked after Pripyat is explored, there should not be any practical reason to give him a third bottle. However, his skills are not entirely dependent on vodka as he can still repair equipment while sober.
His dependency on vodka can be cured if the player gives him Joker's PDA and Barge's PDA; and then shows him the unidentified weapon retrieved from the Monolith in Pripyat. Cardan will immediately recognize the weapon but the shock causes him to effectively faint. When he wakes up the next day, he swears off alcohol, properly identifies the weapon as the Gauss Rifle, and gives the player a massive discount on any future upgrades and repairs without the need for vodka. Cardan's sobriety leads to the 'good' ending for Cardan and Nitro.
After receiving the schematics for the Gauss Rifle, he can produce jury-rigged batteries – six charges for 2000 RU. These batteries, while still just as accurate and powerful as the factory-made cells, are heavier. Upon receiving a Calibration Kit, he becomes the only technician capable of fully upgrading an Exoskeleton's servomotors, allowing its user to sprint.
Cardan's rate depends on his state of inebriation or the status of his keycard. The player's stance towards the Loners and Bandits in the area has no effect, neither does turning in Joker's and Barge's PDAs.
- 10% discount and tier 1 upgrades are available with one vodka – lasting about four in game hours.
- 20% discount and tier 2 and tier 3 upgrades available with two vodkas.
- 35% discount after visiting the Project 62 lab and returning his keycard. All upgrades without vodka.
- It is likely that Cardan's model is based off of Konstantin Stupivtsev, the designer who created Call of Pripyat's HUD and UI.