For a current list of ammo types look at http://code.google.com/p/hedgewars/source/browse/hedgewars/uTypes.pas#146
{{{
// Available ammo types to be used by hedgehogs
TAmmoType = (amNothing, amGrenade, amClusterBomb, amBazooka, amBee, amShotgun, amPickHammer, // 6
amSkip, amRope, amMine, amDEagle, amDynamite, amFirePunch, amWhip, // 13
amBaseballBat, amParachute, amAirAttack, amMineStrike, amBlowTorch, // 18
amGirder, amTeleport, amSwitch, amMortar, amKamikaze, amCake, // 24
amSeduction, amWatermelon, amHellishBomb, amNapalm, amDrill, amBallgun, // 30
amRCPlane, amLowGravity, amExtraDamage, amInvulnerable, amExtraTime, // 35
amLaserSight, amVampiric, amSniperRifle, amJetpack, amMolotov, amBirdy, amPortalGun, // 42
amPiano, amGasBomb, amSineGun, amFlamethrower, amSMine, amHammer, // 48
amResurrector, amDrillStrike, amSnowball, amTardis, {amStructure,} amLandGun, amIceGun, amKnife, amRubber); // 56
}}}