Nothing much difficult here. Just kill or be killed, and make sure you take advantage of getting back to the 'shuttle' to get your health restored until you can get into the suite.
Make sure you step into that teleporter near the suite area - it will get you to some more shotgun shells.
North of the Outdoor pool, past the ledge, is an area with a 3x canister and more ammo. A grenade jump over the ledge will get you there.
Similarly, in the area with the Juggernaut, grenade jumping over the short wall will get you to a 2x canister and more ammo.