As any speedrun, the goal of this run was completion every mission so quickly as it's possible, therefore only necessary objectives were completed. In addition I used one game feature - indirect running: simultaneous pressing keys of side running and direct running (about 10% speed advantage). Also I took into account that running speed some increases if current weapon is knife, grenade or nothing (It is game bug if drop weapon and quickly press key with slot for this weapon. There are weapon name and "0" ammo images on screen. For example it was in first level with mac10 and third level with psg1sd). Also if I drop extra guns then it increased speed (without dependence on current weapon). So in the game I often dropped primary guns. The accuracy of any gun is very bad in case of running, so for economy of ammo I often shortly stopped before firing. There are no quick saves in game, so for completing every mission i made from several hundreds to thousand tries.

RUSSIA:

Level 1 "Infiltration"
According to objective I had to find other route except bridge. But I decided that crossing bridge is faster.
In addition time before alarm actuation has large importance. If alarm is activated too early then all enemies gathers like ants. Therefore alarm security was killed and several cameras were destroyed.

Level 2 "Deep in the mines"
In this level I strived for same objective: don't cause alarm too early.

Level 3 "The weather station"
It was hotly in spite of snow. There were a lot of enemies with ak74. They kill faster from it. For time economy I used grenade against 5 enemies at once. When I running up to the buildings I made a couple of shots, so all enemies began to come out from buildings. They crowded on exits so it was easily to kill them.

Level 4 "Bridge across the Dnestr"
Here it was more difficult. More enemies. Using loud weapons was complicated by snipers on the opposite side of river. After activating two bombs I appeared on opposite side. There were a lot of enemies. The shooting from pistol is too slow but shooting from rifle is loud (its mean be observed by snipers). So I decided to use trick - distraction (throw of grenade into floor). Then nearest enemies began to randomly run and stopped fire. In addition they did not remember how I escaped. Also snipers didn't understand anything.

Level 5 "Ambush"
There were two objectives: to blow up the armoured car and to steal the chip. After these operations it remained to expect before chopper came flying on evacuation point. (It was no time dependence from main character)

Level 6 "Production facility"
There were a lot of enemies too. But this time area is easily visible and I was quickly detected. Therefore safest way was through the roof. There were completed 3 of 5 objectives.

Level 7 "Border crossing"
Here I didn't use any firearms. I knifed one sniper as most dangerous enemy. The direct non-stop route was complicated by chopper or rather his 0.50 inches machinegun (for comparison the caliber of "awp" in counter-strike is 0.338 inches ). It can kill from two shots. When chopper was flying behind it was continuously firing, but there was no hits because bad angle of aiming. After little turn it hits 2 times (5% health remained). After full turn it can frequently hit, so during approaching chopper I moved exclusively through bushes as a cover. I stopped in the last bush and waited when chopper crossed the definite point. In this point I leave the field of chopper view. After that I with no worry ran to last point.

LIBYA:

Level 8 "Libyan rendezvous"
In this mission such objectives as to find guide, to take bomb and to make a diversion were optional. I ran almost directly. One of the easiest levels.

Level 9 "Prison escape"
I attributed it to hardest levels. There was huge quantity of Arabs with uzi, desert eagles and a lot of snipers. Tactics without alarm was not fit. They frequently hits, so I had to kill them all who can prevent prisoner rescue. For quickly killing I purposely activated alarm at beginning. For time economy I used grenade. It killed about 10-15 enemies (I didn't count corpses). Also I had to kill two most dangerous snipers.

Level 10 "Priboi's Villa"
Main goal was survive. In spite of shortness this level was enough difficult (It is first level where heavy guns like rpg7 appears). I had to approach the gates with curved trajectory that they could not detect me from inside. Alarm may be activated at the moment when villa doors are opened but not earlier. Otherwise the route would not be (alive). Therefore one camera that can actuate alarm too early was destroyed.

Level 11 "The airfield"
Main objective was actuating the fuel station as fast as possible. Timer at 3 minutes activated after that. Then I could wait this time and unhurriedly took ammo for .50 browning. But stopping of fuel station by somebody must not be allowed. So I distracted them by loud shots. Also during this time I decided to draw my nick on the wall.

Level 12 "Zaleb'S stronghold"
Now I acted as a machine gunner. This is longest level but easy because I was in the chopper almost all time (It is no time dependence from me)

Level 13 "Showdown at he docks"
Enough hard level. Activating alarm too early must not be allowed. Otherwise i would have been roasted from rpg7. The sniper who in crane is very dangerous so I killed him from afar. All the more here I had to wait until the camera near door turns away. There are electronic gates on the way to generator. It was opened by enemy and was bound to close soon. If it would was closed when I inside, I would could not open it. Therefore I opened it from outside panel. That sniper on roof almost do not hit so I did not kill him. Then little video follows fence crushing and using computer. After that two Chinese wanted to tie an anchor to the feet and drown me. But they could not do it...

CHINA:

Level 14 "Island assault"
Goal - preventing alarm actuation during all level. Otherwise mission aborted. I killed enemies one after another and watched alarm buttons. Level was the medium complexity.

Level 15 "Air-strike"
Medium level. Main objective is indication on two anti-aircraft defenses in order to navigation system of fighter could detect it. But it's necessary to approach every defense no farther than 50 meters and to wait not less than 20 seconds. Also for time economy I did not allow to detect myself. Therefore I killed only six enemies. It was a required minimum. Also until the parcel is not dropped, I was moving on all fours. Otherwise I would "caught" a rocket.

Level 16 "The ancient temple"
It was a hardest level in game. More enemies with ak74, rpg7, minimi and for the first time appeared Chinese silent gun with fire rate of 1300 shots per minute (22 sh/second). Also they have security machineguns with auto aiming. It would be much easier if I could shoot from a distance. Probably not for nothing that .50 sniper rifle was given. But I decided to complete level by simple assault even without deactivation security system. Consequently After about 1000 tries I had reached the last door alive only once.

Level 17 "Secret weapons Lab"
It was not difficult. Main goal - don't cause alarm too early. On the way I "put to sleep" 4 enemies from grenade and destroyed deceptive armoured camera, which was destroyed from 3 shots (for destroying true armoured camera would have several hundreds of shots). There was a video follows using a computer, after which I had to kill ringleader and all of his guards.

Level 18 "Mission control"
This mission was the medium complexity. Here I could cause alarm only near the end. When approaching wagon I had to wait a couple seconds, so I went out of sight of one Chinese. Otherwise alarm would be activated.

Level 19 "The launch pad"
Enough difficult level. In the beginning I could not use loud weapons, because special units with armoured car can come out. During opening valves on fuel station I killed two most dangerous snipers. Actually I was carrying sniper's g11 from last level for that. Then I killed last sniper, completed 2 objectives, used clinging jump and was going to bunker. Before pressing last button I used distraction.