CSB Round Summary ends every round with a quick recap. It tracks kills (from DeathMsg) and damage (from Ham_TakeDamage) live during the round, then when a team wins it shows the winner, the running T - CT score, the round MVP (most kills), the top damage dealer and how many players survived - both in a HUD sync channel and in chat. All per-round counters reset when the next round starts.
hamsandwich module in modules.ini.csb_round_summary.sma, copy it to addons/amxmodx/plugins/ and add it to plugins.ini.