If this game actually was a "living sandbox" (like GTA5), then that should be possible. Unfortunately, "living sandbox" is just some bullshit label that IO-I have slapped on the game to justify the glacially slow delay before they announce season 2 (or any meaningful new content FTM).
EDIT: that may be a little unfair, but in terms of scale and freedom to explore; if GTA5 is a sandbox, Hitman is the sand that you find in your shoe after a day at the beach.
lol, last year, they were using buzzwords that compared the game to WoW (online world of assassination), now they are courting comparisons to GTA (living sandbox). IO-I must have hired the three blind men from the story about the elephant to do their marketing.