It also highlights special items that you might otherwise miss. This can be particularly useful during the Middle East’s frenetic shootouts. When equipped it shows tags that reveal basic info on enemies, neutrals and friendlies, colour-coded red, gold and blue respectively. Snake’s Solid Eye enhanced vision system combines binoculars (Binos), night vision (NV), and normal settings, and is a lifesaver on more than one occasion (See the boss battle against Crying Wolf). However, when the ‘combat high’ ends, Snake’s body will crash leaving him very vulnerable for a while, so make the most of it while it lasts. While this lasts his Psyche does not decrease and the damage he sustains from enemy fire is reduced. Combine a high level of stress (80%) with the need to fire a weapon for a sustained period and Snake enters a ‘combat high’. When stress exceeds 50% Psyche starts dropping so it’s important to try and help Snake chill out when this happens. Presented as a percentage, stress increases with sustained combat, unpleasant surroundings and by carrying too much equipment. Linked to Psyche is Snake’s stress level. Removing the problem will help the gauge to replenish itself, as will smoking (although this whittles away at Snake’s Life gauge) and looking at ‘gentleman’s literature’ (which doesn’t appear to make him go blind, Mum). If he’s too hot, too cold, overloaded with kit or feeling his age – because of an aching back from crouching for too long, say – this will affect his Psyche gauge, making it harder for Snake to aim accurately and generally affecting his performance. Psyche is represented by the four-part gauge below the Life gauge and represents Snake’s mental wellbeing. Taking a day’s break from playing MGS4 will also have an effect, giving you a 20% hike in life force. A valuable bit of knowledge if you find yourself low on rations during a set-piece battle. It will also slowly replenish itself if Snake lies low or seeks cover. The Life gauge is self-explanatory, and can be topped up by Regain energy drinks, rations and noodles. In MGS4, Snake’s Stress, Life and Psyche gauges are all linked. And be warned, before the final act Drebin has a half-price sale on everything, so it pays to keep those special purchases back until then. It’s not unusual for him to take 20% off rifles, say, for one day only. So what’s it going to be? Stealth, all-out war, or a little of both? Oh, one more thing.
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However, if you take the shooty approach, demand goes up and you get more DPs to spend on bigger and better guns. It works like this: if you’re employing stealth all the time, there are fewer shootouts and fewer shoot-outs means demand for Drebin’s stock is low, meaning you get less money. However, the amount of money you earn for each weapon depends on the War Economy.
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Doing this also means that Drebin will automatically buy any identical weapons that you subsequently pick up, for Drebin Points that you can then use to buy ammo or specialist, new weapons. With nanomachine technology giving guns ‘fingerprint’ access only, Drebin must launder new weapons that you find for a small fee if you want to use them. Weapons launderer Drebin gives you valuable assistance and an interesting dilemma in the game.