We plan on adding some "Match achievements" to spice the game a bit more.
here are some examples: (not finilized)
buy 1 of each - can separate into 2 achievements, 1 for attack units and 1 for defense
use all portals
impenetrable - successfully block x waves without getting nexus hit
collectables - collect all coins in 1 round
kill x units - can separate per turret or in general
finishing an achievement can reward the user with “gold” which can give him advantage.