Playability:
Easy to play and understand. Didn't realize the spike/bandage cards were draggable at first. You can hardlock yourself if you're on low HP and get double Spike though. Would be nice to be able to place traps multiple steps in advance.
Theme:
Fits the theme well enough as audience sentiment is the main goal. Could tie this into gameplay more but that comes later.
Cleverness:
Interesting design idea here. Would be nice to have more options for traps/benefits.
Artistic Style:
Simple and consistent. Good work on the scanline shader options. The highest tier is legit unreadable though.