First of all, I want to say that the destruction in this game is extremely satisfying, just having the ability to bring any building to rubble usually means everything is getting demolished, either with explosives or when they run out, your sledgehammer.

But this game really doesn't benefit being an open-world game. Sure, you get to run around playing terrorist on Mars blowing up any building in your path, then having to evade the authorities which is simply achieved by just driving to the closest safehouse. Mostly what happens though is you drive for a few minutes to get to something worth destroying, blow up things until you're out of explosives which then means driving all the way back to the safehouse to restock, and then driving all the way back to something to destroy and repeat which tends towards extremely tedious gameplay, even if the destroying part is incredibly fun.

Driving around the world just feels empty (sure, it's Mars) but there is literally nothing worth driving to other than indicators on the map, there's nothing to really discover. No particular area feels like it is fully fleshed out and designed to the level it would have, had it not been open world. These problems aren't unique to Guerrilla as many open world games fail to get this right but it doesn't really try to do anything new in the open-world space either.

For me, the game would have been much more enjoyable just dropping you into an area with your goal and blowing your way to it using the fantastic destruction engine rather than the tedium of constantly having to drive get more ammo, or your next mission, killing the flow of the game.