This level does appear to be quite daunting (two chainguns!), but in actuality is not as hard as it may seem-it makes quite a fun level to play. At the start, pick a direction (left or right), then jump that direction and jump off the walls right above the mines and hit that trapdoor switch. If you are going after gold, fall down to the bottom area and hit the launchpad, getting the three pieces of gold, hitting the launchpad again to get the two pairs of gold above. Then jump back to the top of the slope, and try to land on one of the skinny flat regions. The chainguns will immediately aim at you; jump up and take hold of the wall, then either walljump off to the wall again for more gold, or just keep wallclimbing upwards.