The "General Games Chat" forum, which includes Retro Game Reviews, has been archived and is now read-only. You cannot post here or create a new thread or review on this forum.
Pick up the sniper gun & ammo and the car bomb.
Go down the sewer opening in the middle of the road.
Now this is tricky to explain and remember: but run to the "farthest but one" sewer passage (I think).
When you emerge you should see a chauffeur driver having a slash against a wall.
Kill him in a quiet way - strangle him or shoot him with silencer gun.
Steal his clothes.
"Walk" out round the corner to the limo.
Put the bomb on the car.
And "walk" back to the sewer opening you just came from.
Back in the sewers, run to the left all the way to the next passage.
Go out of the sewer opening.
Take care of one solider as quietly as possible.
Climb up the tower.
Get out the sniper rifle and focus in the direction of the park.
Wait till you see the two guys strolling in the park.
Shoot one of them dead.
The other will run away to the limo and - *BOOM*
Both are now history.
Escape.
That's how I did it, but the sewer passages I described may be the wrong ones. But that's the best I can do. Hope it helps.