Look, anyone who's ever played a video game knows that right behind this wall is something you can use. It might be a health pack, it might be weapon, but this just proves the world around us is a video game.

Twitter: @TempestCDN

Same for this door! This is clearly an opportunity to get through to the bonus level.

Twitter: @neeliegr

This slightly discoloured wall can be blown up to get through to the next area. Assuming you didn't use those explosives trying to explode another discoloured wall that it turns out was just in shadow.

This slightly discoloured wall can be blown up to get through to the next area. Assuming you didn't use those explosives trying to explode another discoloured wall that it turns out was just in shadow.