LOST PLANET
For those who where there back in '07, you guys know.
In short it was a team based TPS with respawn, the weapons pick-ups were on the map including mechs and special weapons made for them (that could be used on foot too but greatly limiting your movements), combining this with the awesome grappling hook the gameplay allowed you to quickly move around the (huge) maps, it was awesome and the best mode to play was a mix of capturing points (balise) which doubles as a score and gameplay mechanic, the energy being a ressource in the game that allows you to regain your life-points slowly after taking damage, serves as a power supply to operate the mechs (they drain your meter quickly) and fire laser weapons.
There was a deep learning curve and surprisingly good balance with the weapons, even on foot against a mech if you had certain weapons you could charge shot a plasma ball to eject the pilot and take his mech without damaging it for exemple, grenades could be replaced with frisbees like explosives that stick on contact and explode, one tactic I'd use was to send the disc flying across the map to a balise that was being captured by another player, wait for the disc to be near him and shoot at it to trigger the explosion, you could hang on below structures with the grappling hook, do rolls with invulnerability frames when in combat, target the head, legs to stagger the opponent, lots of neat little gameplay tricks that greatly rewarded those who were good at the game, it was impossible for a beginner or intermediate player to best a very good player, it rewarded skills.
That don't means you couldn't cheese your way to victory though, nothing stopped you from finding a mech, roam around until you found the most OP mech weapons to equip, go to a remote balise and wait 4 minutes doing nothing but collecting insane level of energy, then go berserk for 10 minutes killing everything that moves in the map, then again this could be countered with so much possibilities by the enemy team, like the green laser beam tactic said earlier, or a sniper shooting at the mech knee a few times, having found the homing laser weapon on the map etc.