In one mission in Jak II, Jak must go to the waterfront, a maze of docks and decrepit houses, to obtain a piece of the Seal of Mar. Once Jak gets the piece of the seal, the Krimson Guard pops in and tries to kill Jak for the seal piece.
The following is a list of things one might do to escape:
option one: get in a zoomer and drive away
For the duration of this mission, the once plentiful zoomers have been taken away for no reason. The zoomer Jak may have taken has disappeared as well.
option two: swim/jetboard over the water
The second Jak touches the water, a turret that instantly kills him at full health appears. No matter where Jak is, the turret will hit. If Jak hops back up onto a dock, the turret's shots will pierce the dock.
option three: RUN THE FUCK AWAY
The large ships carrying the guards have turrets underneath them and hover right above the docks. If Jak decides to get near them for any reason, they will fire on him, taking off two life chunks per shot. The docks are large and windy, and the guards' own guns can take off two of Jak's eight life chunks.
option four: slowly kill every guard and work your way forward
The guard ships drop around ten men each, and appear regularly on every available path, even the ones that lead nowhere. The guard even sends people behind Jak. If Jak decides to hide behind a building so that the guards who are being dropped off can only attack from one direction, they drop guards on a random dock behind him.
In conclusion, fuck this game.