Utterly addictive puzzler Helsing’s Fire, available for iPhone and iPod touch from Chillingo, has received a massive number of new features in a totally free update.

The game adds a whole new campaign, calling our faithfully dynamic duo back into action to solve the mystery of The Shocking Mire. There, Professor Helsing and his stalwart companion Raffton encounter a new foe - the Splodin Toad. No points for guessing what his power is.

You’ll also face some new twists on the game’s puzzle system (which has you knocking out beasties with carefully placed lamps, using light and shadow to your advantage). You can now temporarily add shields to monsters, making them impervious to damage.

You also have a new character (“Someone's been causing trouble with London's new dynamo” is the only hint Chillingo will give us), a journal for replaying old levels, and the ability to compete against other players online, by collecting bounties for difficult puzzles.

Finally, the game also adds The Shocking Mire to the endless survival mode, and updates the colourblind mode, making it accessible for multiple forms of colourblindness.

Helsing’s Fire is available for iPhone and iPod touch for 59p / 99c / €0.79c. The massive 1.2 update is free to all owners of the game.