Wave 47 on River

Made it to wave 47 on river last night before we all died.  We split up between the two buildings on either end of the bridge.  We tried to grab the mortar between each wave and fire off all three rounds before retreating to the buildings.  At the end of each wave we grabbed the grenades which spawn in the houses halfway down the roads next to the river.  We planted the grenades in areas where the enemies typically spawns or take shelter.  We had two people switching between sniping and using the torque bow from the spawn point of those weapons in the buildings.  We also made sure everyone was aware of the callouts on the map such as upstream-near, upstream-far, upstream-ramp (going down to the river), downstream-near, downstream-far, downstream-ramp.  Also, one house is covered in ivy and the other house isn’t so we used that as a way to call out enemies and ask for assistance when needed.  I’m pretty sure we could have beaten it through all 50 waves, we just had some really bad luck at the end.  When we lost we had all 5 players in one building.  2 upstairs sniping, 2 guarding the door, one on the walkway in the back of the building.  We had a couple grinders make there way to the doorway which kept us pinned down.  A kantus kicked down the shield and we were overwhelmed after that.  We restarted on wave 47 (without shields or our preferred weapons) and beat the horde without any problems through wave 50.  We made sure to let maulers get close enough to use so that we could grab their shields after they went down.  We built up our defenses and took the enemies weapons when we had a chance.  We all had microphones and we all called out enemy positions.  We made sure we didn’t waste sniper ammo by calling which locust we were shooting at.  I’m pretty sure we could have beat all 50 waves without restarting,  just had some bad luck.  That was our highest ranking game on River according to the leaderboards.  I am ranked 6257 out of 2,944,758.  That puts us in the top 0.2%.