grindy but very enjoyable (if you like accumulating shit)
the weight limits and the progression of unlocking shop items are quite interesting.
in order to not go bankrupt i wound up spending a surprisingly high amount of money in a low weight, high damage machine in order to grind since i sold a lot of items to make room for better ones quite frequently.
though the weight limits get surpassed by the max bot weights near the end, leading me to purposefully down grade which made the ending levels easier since instead of maxing my 2 bots the best i could, instead i just maxed out the damage and filled the rest of the weight with plating, even the final level is like that so you can't even test out your end game shop items, shame too since the highest damaging weapon and highest armoured plate perfectly fill up the weight cap of the final bot.
ignoring difficulty though it's a mix of the satisfaction of watching a game play itself with micromanagement of making sure you have enough money to progress (or creating a grinding bot that can survive in the highest paying arenas possible)
fun game, though it's a shame there isn't much space for experimenting with additional bots, the enemies never go above 3 so you can more than make it by with just 2 bots.