Spider-Man: The Movie Game - Kraven's Test - No Damage - "Perfect" Bonus on Super Hero Difficulty

Here are my 5 best tips for anyone trying to get “perfect” on this level.

1. DO NOT rush!

2. Skip the cutscene at the start of the level to avoid the extra poison damage in that very first room.

3. Getting past the poison cloud that blocks the door out of the medical area, requires extremely precise movements. You must drop from the exact center of the last line of ceiling tiles. Just crawling straight will always result in damage. You'll either stop just short with Spidey's head entering the poison, or you'll overshoot and crawl down the wall.
The only way to get through is by turning into it from the side. I find that using Spidey's hand as a guide really helps. Start your turn the second Spidey's right hand enters the last row.

4. Use web-dome to block Kraven’s sniper shots. (I didn’t, but that’s because I’m stupid. XD)

5. If you're not absolutely determined to use Spidey for this, I'd highly suggest you use Goblin instead. Goblin's turbo run can get you out of that medical area before the poison activates, and the glider will allow you easy passage through most of the traps.
It's so much easier, that Kraven will actually mention how Goblin's use of gadgets "is not manly" and he should "show some courage." Lol!