Mass Effect Infiltrator on iPhone has just received a substantial update, which adds a bonus mission and a host of tweaks to the tie-in sci-fi blaster.

In Infiltrator's campaign mode, you play as a veteran agent of Cerberus - a shadowy humanity-first organisation which has been trafficking aliens for medical experimentation.

In the newly added bonus mission, you take control of one of these captured aliens, and you're naturally pretty keen to escape the facility's medical bay before your body is 'donated' for scientific research.

Thankfully, shooting your way out should be a little easier than before, for the new update delivers improved aiming and the option to disable the game's divisive tap-to-aim system.

Finally, extra rewards - including war assets which can be used in Mass Effect 3 - are now on offer for consistently high-scoring players, giving you extra incentive to earn full marks on every checkpoint.

Speaking of marks, we awarded Mass Effect Infiltrator a mighty fine 4/5 in our AppSpy review.

The latest version of Mass Effect Infiltrator is available to download right now, while newcomers can pick up the app for the discounted price of $4.99.