It all boils down to this -
the BONUS LEVEL - accessible only if you got all 59 secrets
(or used the Cheat Code). Save your game after the final
level then load up this final test of your endurance. Keep
in mind - you start this level with no inventory and you
MUST be at FULL HEALTH later on in the level, so be
Start by climbing the metal ledges and make your way to the
center structure. Do a running jump to the slope and get the
Flares then jump to the center platform and monkey swing out
over the cathedral ceiling and drop. CRASH! I told you you
needed to be 100% healthy. Limp over to the Medkit on the
landing and fix yourself up. Get the next batch of Flares
from the purple platform then move to the walkway above the
A switch is in the alcove above the bookcase. Flip it then
drop down to the floor and climb up and jump to the central
structure then do a running jump and grab to the ledge and
shimmy left to flip the next switch in the upper alcove. A
hall should now be open back on the floor level.
Head down this hall and run across the floor as it falls out
beneath/behind you and flip the switch at the end. Return to
the main room via the monkey swing which takes you over the
spikes below. Return to the bookcase and get on the ledge so
you can monkey swing to the left. Drop and immediately grab
so you can pull up to the small area at the other end of the
monkey swing and climb above the cable-slide.
Get the Vault Key then take a ride down the slide. Make sure
to drop off just as you slide into the light to land safely.
Pull up onto the area above the pillar then drop and hang
off the other side to spot an open door. Take the monkey
swing across as you catch on fire then drop into the water
ahead to put out the flames. Swim past the piston and push
the button then grab the Medkit from the ledge to the
Above the ladder, do a quick roll and grab the edge to
trigger (but not fall through) the trap door. Jump across
the hole and head to the vault. Use the key to open it up
and shoot out the grates before dropping into the water.
When you finally surface you will find a guard dog and his
master. Kill them and explore the final area. Head towards
the items to end this secret level.