1) don't make me crawl through vents at snail speed
2) don't start a save point right before something unavoidable slow (shimmying, crawling, waiting for elevator, cutscenes)
3) Make wide statistics for fail-points and place continue points right before
4) Absolutely no reload time when failing
5) More gradual health-indication
6) Make the timing for the jump-turn-jump easier to understand/nail
7) [...]