Swap to your rifle or magnum - or feel free to use a Flash Grenade and put it down quickly before it can start to do hit and run attacks. If they do, be wary, as one of them will have a Plaga infection to sprout its scorpion appendage. Turning right at this corner of the maze will put you in range of another pen with three Colmillos ready to burst out and attack you - which makes a great time to throw that Heavy Grenade and tear them apart before they separate. Hopefully by breaking crates in this chapter you may have found a Heavy Grenade, which boasts a lot more power than a regular one. Once past that threat, continue to reach a large area with stairs up to the last tower. Going straight along the wall leads to a crate and dead end, so take the right at the branching path and be ready to shotgun another Colmillos bursting through the hedge maze.