I understood what the game was doing, and wanted to do it - but it didn't seem to work? I was only able to place a trap on the first level. I think the appeal is quite strong. I also couldn't tell what the UI was trying to say in terms of two rows of green bars. Would be interesting to see how it plays when the bugs are fixed.
Here's a playtest
Viewing post in Dead Raiders jam comments
the bars on the tooltip of the trap shows you the cost of it (arrow down next to the bar), the amount of reward it gives (arrow up next to the bars, with the blood splat icon next to it as well - this means you get the reward when you damage them with the trap), and their damage (in the third row with the blood splat icon.)