The trick to Easy mode is 3 area towers: 1 Area weaken + 2 Area Burst (spread out by one tower to deal with EMPs) - then just spam the Ènext waveÈ button
Get Blue coins from the Buttom machine: +1 for an 'Excellent' click and +3 for a 'Perfect'
Upvote to keep this info! Or re-comment with more Blue-coin sources!
Very nicely done 5/5, could use a feature where the last bridge for each level is saved along with the remaining budget. Also, like has been said, a way to move endpoints without redrawing the member.