My short answer is a ESEE Junglas, Puukko from a Lauri blank (or similar 4" fixed blade), Ruger DC-9, and CZ-527 in 7.62x39.
My long answer is... Tricky... I guess as far as blades go I would grab my ESEE Junglas, and a Puukko made from a Lauri blank. 105 mm I'd say. The ESEE can do a lot of hardcore stuff for me and the puukko will be my scalple. Sharp, short, and very inconspicuous though versatile. Guns are tricky though. I feel like a pistol would need to be small but still more powerful than a little .22. Honestly in my collection which is a little fuddy I would grab my Ruger DC-9 as its my most compact/reliable option compared to a full sized .45 and a .44 mag. While it's kind of a shitty pistol it has never failed me and I am very comfortable shooting it with man-sized accuracy up to 15-20 meters. Long gun is an easy answer for me, as I only own four. A Ruger 10/22, a Mosin Nagant, A Mossberg 500, and a CZ-527. I like the idea of a shotgun but with the huge ammo, limited capacity, no real practicality for small game (12ga) and poor accuracy at a range the CZ-527 gets it. With small but reasonably capable ammo (7.62x39), a short range scope, 10 rounds on tap and an action that will never fail me it would prove to be effective for small deer, small game (with FMJ ammo), or two legged predators up to 150-200 meters.