Nothing too groundbreaking in terms of the concept. Weirdest quirk was something that seemed to be an issue where I'd click the tippy-tap button for 10-15 clicks, then move my cursor away, and then the game would suddenly register a surge of clicks I never actually made. Not sure if this is some intended mechanic or a weird glitch (I'm playing on a Firefox browser on Linux, if that matters), but it did affect my experience slightly.
That aside, it's a fun, simple clicker game. I actually enjoyed earning the cosmetics from battle since the amount of cactus points awarded from battle didn't feel worth it. Any time I received cactus points from battle, I felt like I could've earned that many, or more, from simply clicking. If the issue with duplicates was fixed up, such as by awarding ample cactus points when a duplicate is "pulled," it'd be a fun diversion from the clicking portions.
If a shop is implemented, it'd be cool if it was in addition to pulling cosmetics as battle rewards, or if battles granted a secondary currency which is used on purchasing cosmetics.