Envy's honestly surprised that Assumption is still able to try standing...and only that clear difficulty tempers the wave of wariness that surges up when Walter calls for a stop to the battle. If it hadn't been for that, Envy's instincts would have been screaming that it was clearly a trap, that there would be another attack as soon as his and Chimera's guards were down.

But this is about trust, isn't it?

"Chimera, that's enough, it's over. You can stop now."

The sandstorm had already started to slow as soon as Walter had called out, and with Envy's affirmation that the battle was over it really begins to thin as the grains lose their damaging speed and seem to be sucked back into the Tyranitar's body where they'd come from. The whirlpool, too, slows and falls back into the ground. Chimera leans down towards Assumption, but not aggressively.

You did very well, it was a good battle. I'm sure your trainer will take you to be healed right away.