for reference on those attacking him on panel, not sure who the first is. colossal boy is roughly as strong as your kryptonian types, somewhat comparable to superboy. ultra boy also is a superman clone. supergirl herself is kryptonian. one of them blasting looks like andromeda, which is another superman-clone type (people from daxam are all superman-clones basically). other 4 on panel there are probably all by that same level really. and there's multiple versions of them as well as others, including at least 4 other superman esqued beings in the pic with a bunch of 'em. others there somewhere on the page that also attack him obviously, though since it opened to the entire multiverse you have multiple versions of everyone, and a lot of 'em. pretty much nobody else has taken that much damage save for possibly a multiversal threat here and there which is pretty much what he was in powers and parameters in the first place. and despite that the best they could do was just knock him out.
but there's also the rather famous feat of his doing
superboy prime ripped the suit off. universe went byebye. point blank. that's pretty much the scene that STARTS the arc with time trapper as it's as result of that attack that he got portal'd through time here. and... as soon as he lands it's like nothing happened. both ways, the level of output to beat him is way, way above darsh. and half the stuff - especially the stuff he's prone to use - will effectively be like a mini sundip. former's still the more impressive one, latter's the easier one to understand.
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The future must protect the clone's past.
"Maybe it's a tentacle, molesting the planet itself. - Aschen Brodel.