Spider-Man: Shattered Dimensions

Kraven is the first boss you'll enounter in the game. There's two encounters with him in the level.

First Encounter:
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Go into defensive stance (LT), and wait for your spidey sense to tingle, once it does, sidejump (LT+A+direction) to avoid, then mash strong attacks on him (Y) until he recovers. Pretty much rinse & repeat. Occasionally he'll jump up to one of the branches above, zip-kick him (RT) to knock him down. Later in the fight he gets a bit more aggressive, but for the most part it's dodge & mash Y. Eventually you'll end up in a fistfight with him, which is pretty much just random flicking of the analog sticks.

Second Encounter:
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In this encounter you mostly follow the same pattern (dodging then Y mashing). Occasionally he stops and gets a yellowy glow about him, when he does I usually zip line into him (B button) which will hit him once to break that. Sometimes he jumps up to the pillars, again, just zip-kick him when he does (RT). Once you get his health down enough he'll jump away, just jump up (hold A) then while in the air hit B to websling into him and finish the level.

This achievement is called:

Survival of the fittest.

Defeat Kraven on any Difficulty Level.

Very easy stuff i got this on Normal during regular play through. You cannot miss this achievement.

This achievement is for defeating Kraven (the second fight) during regular story progression. Pretty much impossible to miss. Make use of your defensive stance and pound him with your Y attack.

(Unmissable Achievement)

You Can Also Get: Gettin' Warmed Up (Defeat 100 Enemies)
(If you are having trouble either set difficulty to easy or watch this walkthrough)
Credit to packattack04082