You could probably pick any level from the fourth Hitman title (if not all the Hitman games) for this list, as it's with this series that IO Interactive really hit their stride - delivering games with core appeal built specifically around experimentation to succeed, and not seeing everything a given level had to offer on your first time through. However a highlight is Blood Money's Flatline, a fantastic setup that sees you infiltrating a health spa to silence three separate targets whilst escaping with another. The ways you can do this are just brilliant - and at this point in the series the gameplay itself made 47 did exactly what you wanted him to; no more skating around the floor when turning and he'd even hide weapons from guards behind his back at the right moment. With Blood Money's new system of disguising hits as accidents in full effect, it was then up to you to realise how to rig things like someone's gas fire to blow up in their face, or simply to drop a set of weights on another as they worked out. The Hitman games are all great executions on a genius concept, meaning everyone's got their favourite missions - let us know yours in the comments below.