1. Down / run and sprint to avoid hook / find shelves in a safe area / action to shelves to get a key / use key on door / 2 BB: fire with pistols sidejumping / ID card / shelves with UZI machine / down / use ID card on 2 doors.
2. 1st door with dog / fire to corrupted grate to Secret #1 out of 3 / 2nd door with stairs / up / RJA from the broken fence to crate / jump clockwise to land on a symmetric broken fence / switch / MOVIE : BB killed free of charge / 2 shelves: UZI clips and 1 SMP / switch / rail tunnel / 2 BB: fire fire with pistols sidejumping / T-junction.
3. T-junction / right: stairs with cloded door / left: open air and snow / use ID card on door / Electric Control Room: 1 BB with key / use key on door on the top of the stairs at the right side of the T-junction / MOVIE / RJA 2x on metal plates for laser sight and Desert Eagle (= DE) clips / unaccessible door here / just 1 RJA back, drop down to the right side of the triangular plate on the ground (no damage) / use ID card / dog / 6 shelves: 1 SMP, DE clips, The Desert Eagle (the basic weapon of TR3), UZI clips, and a fuse / combine DE and laser sight / bathroom: action to trapdoor: long underwater tunnel to Secret #2 out of 3 / switch to get the T-junction.
4. T-junction again: part 1: to Secret #2: go open air / climb the lower crate near the crane / use DE with laser sight to kill 2 BB firing from the high windows (3 shoots each) [ they can be skipped while playng "pistols only style"] / diagonal RJ to other crates to get Secret #3 out of 3.
5. T-junction again: part 1: Electric Control Room: 1 BB very bad / action to fix fuse / dog / switch to rotate crane / climb rotated crate / jump the submarine / MOVIE.