How to look around while selecting guns in standoff 2

If you're having trouble locating all the gems, keep in mind there are seven types of gems (Pear, square, oval, trillant, brillant, marquise, and unique hearts) and each type has five colors (Yellow, blue, green, white, and red.) Better not to try on your first play through for this one. Topaz (Marquise) - 3,000 - Ch 1-1 - Fight the large waves of minions that block your path and you can collect this treasure. Ruby (Brillant) - 2,500 - Ch 5-3 - Right before you reach the room where you fight Wesker and Jill in the roof of the tunnel. Try to knock the rock pillar down first so that you can get there quick and jump back before Wesker tries to attack you. The gem will drop with the monsters corpse.Дiamond (Marquise) - 5,000 - Ch 6-3 - During the final fight with Wesker, shoot down the pillar of rocks next to the bridge that collapses at the start of the battle, use the fallen rocks as a stepping stone to another path next to the central island. Don't go near the stairs or you can not get the treasure. Soul Gem - 10,000 - Ch 4-1 - When you have to run away from the large monster called the Popokarimu, (the bat-like monster) instead of running, stand your ground and fight. once that is done, you can find the gem between the stairs on the first floor in the main room during the fight with Jill. Heart of Africa - 10,000 - Ch 5-3 - During the fight with Wesker, you must inflict sufficient damage to make him end the fight early. Here is a short list of the most valuable treasures that you might not find during the regular course of the game. When you have done all that, the easy part is getting your handgun (by the way the mosquitoes drop X20 bullets at a time, a good idea to pick em all up.) and shooting it once in the brain, it will be dead after that. If you have no grenades, bad luck you have to wait for the mosquito-like things (i call them Skeeters) and shoot them and they will drop a grenade sooner or later, then after you have done that twice, RUN! he will swipe without warning and it will be a one hit kill, no 'dodge' chances at all, just run. It also does nothing, go near the mouth when it is open after you have shot at the legs then it will say 'press 'X' to throw' obviously you should press 'X' then Chris will throw the grenade in its mouth and the top shell will fall off. What you are meant to do is get hand grenades (if you have none then look around the circle computer and you will find 2 herbs (green) and a hand grenade, DO NOT throw it at the beast. When you are fighting the giant crab in chapter 5 then you probably know you have to shoot at the red tips on each leg, but when the monster comes crashing down and opens its mouth, shooting at it does absolutely nothing.

How to look around while selecting guns in standoff 2