Make a combo of 5 actions.
Pass the toilet paper to the scientist in need.
Perform surgical caffeine extraction from 20 machines.
Kill 10 Airborne Headcrabs using the Shotgun.
Kill 20 enemies with the Hivehand.
Use an entire clip of Gluon ammo in one continuous shot.
Help the Barnacle and Headcrab find true love.
Kill an Assassin with the .357 Magnum.
Kill 10 enemies with a reprogrammed Sentry.
Conduct all of the questionable research experiments.
Ruin the microwave casserole.
Get killed by your own Snarks.
Headshot 20 enemies with the .357 magnum.
Drown in Lambda Core's coolant.
Kill a Barnacle with a Satchel.
Kill a Headcrab using fire.
Kill a Marine with their own grenade.
Kill 10 enemies with Snarks.
Kill 5 enemies with one grenade.
Kill an Icthyosaur with either the Tau or Gluon.
Use the alternate path in Office Complex.
Interfere with the alarm and laptop in Anomalous Materials.
Get overtaken by a Headcrab's ample anterior.
Overcharge it anyway.
Send the Hidden Hat to Xen.
Refuse to insert the specimen into the Anti-Mass Spectrometer.
Seat 4 customers onto the matching color seats in a single party.
Reach 5x color matching indicator over any seat
Run a total of 1000 steps serving customers.
Serve a total of 100 drinks.
Gain a total of 4000 points.
Gain a total of 10000 points.
Complete 25 levels with 3 stars.
Receive 5000 points for a single table.
Receive tips a total of 100 times.
Complete 15 levels without losing a customer.
Use powerups 20 times.
Complete 25 levels.
Complete first level with an 3 stars.
Seat 160 customers at the tables.
Seat 60 VIP customers at the tables.
Serve a total of 80 customer parties.
Serve a total of 20 VIP customer parties.
Serve a total of 10 take-away orders.
Gain a total of 1500 points in tips.
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